180-x=x+42

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Solution for 180-x=x+42 equation:


Simplifying
180 + -1x = x + 42

Reorder the terms:
180 + -1x = 42 + x

Solving
180 + -1x = 42 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
180 + -1x + -1x = 42 + x + -1x

Combine like terms: -1x + -1x = -2x
180 + -2x = 42 + x + -1x

Combine like terms: x + -1x = 0
180 + -2x = 42 + 0
180 + -2x = 42

Add '-180' to each side of the equation.
180 + -180 + -2x = 42 + -180

Combine like terms: 180 + -180 = 0
0 + -2x = 42 + -180
-2x = 42 + -180

Combine like terms: 42 + -180 = -138
-2x = -138

Divide each side by '-2'.
x = 69

Simplifying
x = 69

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