120=10x+5+2x+7

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Solution for 120=10x+5+2x+7 equation:


Simplifying
120 = 10x + 5 + 2x + 7

Reorder the terms:
120 = 5 + 7 + 10x + 2x

Combine like terms: 5 + 7 = 12
120 = 12 + 10x + 2x

Combine like terms: 10x + 2x = 12x
120 = 12 + 12x

Solving
120 = 12 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
120 + -12x = 12 + 12x + -12x

Combine like terms: 12x + -12x = 0
120 + -12x = 12 + 0
120 + -12x = 12

Add '-120' to each side of the equation.
120 + -120 + -12x = 12 + -120

Combine like terms: 120 + -120 = 0
0 + -12x = 12 + -120
-12x = 12 + -120

Combine like terms: 12 + -120 = -108
-12x = -108

Divide each side by '-12'.
x = 9

Simplifying
x = 9

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