x+2x+(x-8)=120

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Solution for x+2x+(x-8)=120 equation:


Simplifying
x + 2x + (x + -8) = 120

Reorder the terms:
x + 2x + (-8 + x) = 120

Remove parenthesis around (-8 + x)
x + 2x + -8 + x = 120

Reorder the terms:
-8 + x + 2x + x = 120

Combine like terms: x + 2x = 3x
-8 + 3x + x = 120

Combine like terms: 3x + x = 4x
-8 + 4x = 120

Solving
-8 + 4x = 120

Solving for variable 'x'.

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

Add '8' to each side of the equation.
-8 + 8 + 4x = 120 + 8

Combine like terms: -8 + 8 = 0
0 + 4x = 120 + 8
4x = 120 + 8

Combine like terms: 120 + 8 = 128
4x = 128

Divide each side by '4'.
x = 32

Simplifying
x = 32

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