3x+x-180=180

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Solution for 3x+x-180=180 equation: 


Simplifying
3x + x + -180 = 180

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

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

Solving
-180 + 4x = 180

Solving for variable 'x'.

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

Add '180' to each side of the equation.
-180 + 180 + 4x = 180 + 180

Combine like terms: -180 + 180 = 0
0 + 4x = 180 + 180
4x = 180 + 180

Combine like terms: 180 + 180 = 360
4x = 360

Divide each side by '4'.
x = 90

Simplifying
x = 90

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