3x+x+(x+120)=180

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Solution for 3x+x+(x+120)=180 equation:


Simplifying
3x + x + (x + 120) = 180

Reorder the terms:
3x + x + (120 + x) = 180

Remove parenthesis around (120 + x)
3x + x + 120 + x = 180

Reorder the terms:
120 + 3x + x + x = 180

Combine like terms: 3x + x = 4x
120 + 4x + x = 180

Combine like terms: 4x + x = 5x
120 + 5x = 180

Solving
120 + 5x = 180

Solving for variable 'x'.

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

Add '-120' to each side of the equation.
120 + -120 + 5x = 180 + -120

Combine like terms: 120 + -120 = 0
0 + 5x = 180 + -120
5x = 180 + -120

Combine like terms: 180 + -120 = 60
5x = 60

Divide each side by '5'.
x = 12

Simplifying
x = 12

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