1. Find x+y, if: 5x+8y=67 and 2x-y=31 a. 98 b. 46 c. 21 d. 14 e. 7 2. Peter’s salary is twice Ann’s salary and half of David’s salary. Then the average salary of Ann and David is Peter’s salary. a. …
1. 5x + 3 = 7x – 1. Find x a. 1/3 b. ½ c. 1 d. 2 2. 5x + 2(x + 7) = 14x – 7. Find x a. 1 b. 2 c. 3 d. 4 3. …