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

x = -4

Step-by-step 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

Step-by-step explanation:

-15 - 9x = 21

-9x = 36

x = -4

answer is A

$4

step-by-step explanation:

$30×5=$150

$150 minus $130=$20

$20÷5=$4.

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-2

7 - 9 = -2

reversed:

-2 + 9 = 7