Question

If 3 times a number minus 2 equals 13, what is the number? A. 5 B. 2 C. –6 D. 4

Answer 1

3x - 2 = 13

Add 2 on both sides

3x - 2 + 2 = 13 + 2
3x = 13 + 2
3x = 15

Divide both sides by 3.

3x/3 = 15/3

x = 15/3

x = 5

Your final answer is A. 5.