Question

4) If – 15 – 9x = 21, then x = _?
A) {-4}
B) (-2)
C) {6}
D) {-3}

Answer 1

Explanation:

-15 - 9x = 21

-9x = 36

x = -4

answer is A

Answer 2

x = -4

Explanation:

– 15 – 9x = 21

Add 15 to each side

– 15+15 – 9x = 21+15

-9x = 36

Divide by -9

-9x/-9 = 36/-9

x = -4