Question

For which equation would x = 5 be a solution?

4x - 7 = 27
3x + 6 = 21
12 - 2x = 13
7 + 6x = 27

Answer 1

B. 3x + 6 = 21

Explanation:

4x-7=27, x=8.5

3x+6=21, x=5

12-2x=13, x=-0.5

7+6x=27, x=3.33

Answer 2

3x+6=21
3x=21-6
3x=15
x=5