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Canadian Algebra Practice: Pass Your Trade or CAEC Exam

Quick Review and Tutorial – How to Solve Linear Equations in One Variable

Linear equations in one variable x is an equation with the following form:

ax = b

where a and b are some real numbers. If a = 0 and b is different from 0, then the equation has no solution.

Let’s solve one simple example of a linear equation with one variable:

4x – 2 = 2x + 6

When we are given this type of equations, we are always moving variables to the one side of the equation, and real numbers to the other side of the equals sign. Always remember: if you are changing sides, you are changing signs. Let’s move all variables to the left, and real number to the right side:

4x – 2 2x + 6

4x – 2x = 6 + 2

2x = 8

x = 8/2

x = 4

When 2x goes to the left it becomes now -2x, and -2 goes to the right and becomes +2. After calculations, we find that x is 4, which is a solution of our linear equation.

Let’s solve a little more complex linear equation:

(2x – 6)/4 + 4 = x

2x – 6 + 16 = 4x

2x – 4x = -16 + 6

-2x = -10

x = -10/-2

x = 5

We multiply whole equation by 4, to lose the fractional line. Now we have a simple linear equation. If we change sides, we change the signs. At the end we do the final calculations.

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Stop Staring at the “X” and Start Your Career.

If you’re sitting at your kitchen table in Alberta or Ontario feeling like you’re staring at a brick wall of math, you aren’t alone. For many, a single x in a math problem is the only thing standing between them and a career in the Canadian Forces, a Skilled Trade, or finally getting that CAEC certificate.

At Complete Test Preparation Inc., we know the “Big Prep” companies love to make this sound like rocket science. It’s not. It’s a hurdle. Whether you are facing the Alberta Entrance Exam 70% cut-off or the no-calculator pressure of the CFAT, you need “passed,” not “fancy.”

Our Canadian Algebra Practice is designed specifically to help you bypass the 3-month wait time for re-exams and that $100+ provincial fee. Let’s get you to work.

Why the “70% Wall” Trips Up Good Students

In coffee shops from Fort McMurray to Halifax, there’s a “local legend” that follows the Alberta Entrance Exam and the CAEC: the dreaded 70% Wall.

The story goes that the math is “impossible” or that the provincial examiners are trying to trick you. But having spent years triple-checking these questions at my own kitchen table, I can tell you the truth is much simpler—and a lot less scary.

The “All or Nothing” Trap

Most “good students” fail because they treat these exams like a high school test where “showing your work” gets you partial credit. In the world of AIT Tradesecrets or the RCMP RPAT, there is no partial credit. You either have the right answer, or you don’t.

When the provincial passing grade is 70%, you only have room for a few “silly” mistakes. Those tiny errors—forgetting to flip a negative sign or a quick multiplication slip—are what build that wall.

It’s Not Calculus, It’s Consistency

The “Big Prep” companies want you to believe you need to relearn three years of high school algebra. You don’t. The exams for Canada Trades or the CFAT aren’t testing your ability to do complex calculus; they are testing your numerical stamina.

They want to see if you can solve 20 one-variable equations in a row without making a single “human error.” Why? Because if you’re a carpenter calculating the load on a header, a “small sign error” means the roof comes down.

Breaking the Legend

The way you scale the “70% Wall” isn’t by studying harder—it’s by studying smarter for the Canadian context:

  • Master the “Sign Flip”: Most failures happen when moving terms across the equals sign.
  • Ditch the Calculator: If you’re heading for the CFAT, practicing with a calculator is like training for a marathon in a car. You need to build the mental muscle.
  • Know Your Provincial “Floor”: Understand exactly what your specific board (like Alberta AIT) requires. Sometimes, the difference between a 68% (fail) and a 72% (pass) is just two questions you rushed through.

Brian’s Straight Talk: Don’t let the “Local Legend” get in your head. You don’t need to be a mathematician to get into the trades or the force; you just need to be precise. We’ve built our practice sets to mirror that 70% pressure, so when you sit down for the real thing, it feels like just another day at the desk.

 

5 “Common Trap” questions on the CFAT, RCMP, and Alberta Trades exams.

These aren’t designed to be “hard” math—they are designed to catch you if you’re rushing or haven’t mastered the “Sign Flip.”

The “70% Wall” Challenge: 5 Common Traps

1. The “Sign Flip” Trap

Solve for x:

-3x + 7 = -8

a) x = 5
b) x = -5
c) x = 0.33
d) x = -0.33

2. The “Hidden 1” Trap

Solve for x:

12 – x = 20

a) x = 8
b) x = -8
c) x = 32
d) x = -32

3. The “Division Distraction” Trap

Solve for x:

x/4 = 12

a) x = 3
b) x = 8
c) x = 48
d) x = 16

4. The “Parentheses Pressure” Trap (Common in CAEC)

Solve for x:

2(x – 3) = 10

a) x = 6.5
b) x = 2
c) x = 8
d) x = 13

5. The “Double Negative” Multi-Step Trap

Solve for x:

5x – (2x + 4) = 11

a) x = 5
b) x = 2.33
c) x = 7
d) x = 1

Solving for X: The Journeyperson’s Way

If you’ve ever been on a job site in British Columbia or Alberta, you know that “over-complicating” things is a quick way to lose time and money. When “Big Prep” teaches algebra, they make it look like a lab experiment. At Complete Test Preparation Inc., we teach it like a trade.

Solving for x isn’t about being a math genius; it’s about keeping the load balanced.

The “Truck Scale” Principle

Think of the equals sign (=) as a scale at a highway weigh station. To keep the truck level, whatever you do to one side, you must do to the other.

If you have x + 5 = 12, and you want to get that x by itself, you need to “unload” that 5.

  • The Action: Subtract 5 from the left.
  • The Balance: You have to subtract 5 from the right, too.
  • The Result: x = 7.

The “Sign Flip” Shortcut

Here is the “Journeyperson’s Shortcut” we’ve developed after years of helping students pass the Alberta Entrance Exam and the CFAT.

When a number “jumps” over the equals sign to the other side, it must change its sign. It’s like a worker crossing a provincial border—they have to swap their plates.

  • A plus becomes a minus.
  • A minus becomes a plus.
  • Multiplication becomes division.
  • Division becomes multiplication.

Example from the Site: > Imagine you’re calculating the length of a run (x) and you have:

3x – 10 = 20

  1. Move the -10 over: It “jumps” the fence and becomes +10.
    • 3x = 20 + 10
    • 3x = 30
  2. Move the 3 over: Since it was multiplying x, it “jumps” and becomes division.
    • x = 30 / 3
    • x = 10

Why This Matters for Your Career

Whether you’re writing the RCMP RPAT or the CAEC, they aren’t looking for a dissertation. They want to see if you can find the “missing piece” (x) quickly and accurately. If you can’t balance an equation on paper, a foreman isn’t going to trust you to balance a load or a budget on the job.

 

Common Mistakes Answering Linear Equation Questions

  1. Misinterpreting the Question or  Setting Up the Equation Incorrectly
    • Failing to properly understand what the question is asking.
    • Confusing linear equations with other types of algebra.
    • Misreading the problem and setting up the wrong equation.
  1.  Basic Arithmetic Errors
  2. Solving for the Wrong Variable:
    • Solving for the wrong variable.
  3. Sign Errors:
    • Incorrectly using positive and negative signs.
    • Failing to change the sign when performing basic operations.
  4. Fractions and Decimals:
  5. Incorrect Distribution
    • Mistakes when applying the distributive property.
    • Forgetting to distribute a negative sign through parentheses.
  6. Incorrectly Combining Like Terms 
    • Failing to properly combine like terms.
    • Mistaking terms that are not alike for like terms.
  7. Skipping Steps:
    • Skipping steps in the process, leading to errors in the solution.
    • Not showing work, making it hard to identify where a mistake was made.
  8. Checking Solutions:
    • Forgetting to plug the solution back into the original equation to check its correctness.
    • Assuming an answer is correct without verification.
  9. Mistakes Graphing
    • Errors plotting or connecting points.
    • Misinterpreting the slope and intercept in the line equation.
  10. Time Management:
    • Spending too much time on one problem and rushing through others.
    • Not allocating enough time to review and check answers.  Time Management on a Test
  11. Anxiety and Pressure:
    • Feeling overwhelmed or stressed causing incorrect answers.
    • Making careless mistakes due to test anxiety.  Test Anxiety Tips

 

H3: Mastering the RCMP RPAT Numerical Skills & CFAT Problem Solving

If you are aiming for a career in uniform, you aren’t just fighting crime or defending the country—you’re fighting the clock. The RCMP RPAT (Police Aptitude Test) and the CFAT (Canadian Forces Aptitude Test) are famous for their “Numerical Ability” and “Problem Solving” sections.

The big “Big Prep” mistake? They think these are math tests. They aren’t. They are decision-making tests using numbers as the language.

The RCMP RPAT: Precision Under Pressure

The RCMP RPAT Numerical Skills section focuses heavily on logic-based algebra. You’ll be given a scenario—perhaps involving travel times or budget allocations—and you’ll need to set up a one-variable equation on the fly.

  • The “LSI” Terminology: You need to be familiar with Composition and Quantitative Reasoning.
  • The Goal: Accuracy. The RCMP doesn’t want a constable who “estimates” a speed—they want the exact number.

The CFAT: The “No-Calculator” Gauntlet

The CFAT Problem Solving subtest is the highest-stress environment for many applicants. Why? Because the Canadian Forces Aptitude Percentiles are calculated based on your ability to do mental algebra.

  • The Constraint: No calculators allowed.
  • The Skill: You need to be able to look at an equation like $4x + 12 = 28$ and “see” that $x=4$ in under 15 seconds.

Why “Big Prep” Fails You Here

Most generic study guides give you 500 pages of high school math. You don’t have time for that.

We focus on the Essential Skills—the 20% of algebra that makes up 80% of your score. Whether you’re aiming for the RCMP or a specific Military Trade, our focus is on getting you past that percentile cut-off so you can move on to the physical and the interview.

 

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Updated: Wednesday, March 25th, 2026
Published: Thursday, November 27th, 2014

    3 Comments

  1. Jennifer
    March 31, 2018 9:03 am
    Reply

    thanks!! found this easy to answer

  2. Paul
    May 30, 2018 9:18 pm
    Reply

    thanks alot for this preparation

  3. Charity ajema
    January 26, 2022 7:38 am
    Reply

    Wow good work

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