3x+(x-12)=120

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


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

Reorder the terms:
3x + (-12 + x) = 120

Remove parenthesis around (-12 + x)
3x + -12 + x = 120

Reorder the terms:
-12 + 3x + x = 120

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

Solving
-12 + 4x = 120

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + 4x = 120 + 12

Combine like terms: -12 + 12 = 0
0 + 4x = 120 + 12
4x = 120 + 12

Combine like terms: 120 + 12 = 132
4x = 132

Divide each side by '4'.
x = 33

Simplifying
x = 33

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