-3(9-7x)=120

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Solution for -3(9-7x)=120 equation: 


Simplifying
-3(9 + -7x) = 120
(9 * -3 + -7x * -3) = 120
(-27 + 21x) = 120

Solving
-27 + 21x = 120

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '27' to each side of the equation.
-27 + 27 + 21x = 120 + 27

Combine like terms: -27 + 27 = 0
0 + 21x = 120 + 27
21x = 120 + 27

Combine like terms: 120 + 27 = 147
21x = 147

Divide each side by '21'.
x = 7

Simplifying
x = 7

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