Question

3(9 + 7x) = - 120
What is the answer?

Answer 1

x = -7

Explanation:

3(9 + 7x) = -120

now simplify it

27 + 21x = -120

now you want to get the number(s) and variables on different sides

27 + 21x - 27 = 21x

-120 - 27 = -147

21x = -147

now you want to divide each side by 21

21x / 21 = x

-147 / 21 = -7

x = -7

Answer 2

x=-7

Explanation:

Step 1: Simplify both sides of the equation.

3(9+7x)=−120

(3)(9)+(3)(7x)=−120(Distribute)

27+21x=−120

21x+27=−120

Step 2: Subtract 27 from both sides.

21x+27−27=−120−27

21x=−147

Step 3: Divide both sides by 21.

21x/21=−147/21

x=−7