120=5(3x+x)-12x

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Solution for 120=5(3x+x)-12x equation:


Simplifying
120 = 5(3x + x) + -12x

Combine like terms: 3x + x = 4x
120 = 5(4x) + -12x

Remove parenthesis around (4x)
120 = 5 * 4x + -12x

Multiply 5 * 4
120 = 20x + -12x

Combine like terms: 20x + -12x = 8x
120 = 8x

Solving
120 = 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
120 + -8x = 8x + -8x

Combine like terms: 8x + -8x = 0
120 + -8x = 0

Add '-120' to each side of the equation.
120 + -120 + -8x = 0 + -120

Combine like terms: 120 + -120 = 0
0 + -8x = 0 + -120
-8x = 0 + -120

Combine like terms: 0 + -120 = -120
-8x = -120

Divide each side by '-8'.
x = 15

Simplifying
x = 15

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