90-x+2x+30x-x=180

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Solution for 90-x+2x+30x-x=180 equation:


Simplifying
90 + -1x + 2x + 30x + -1x = 180

Combine like terms: -1x + 2x = 1x
90 + 1x + 30x + -1x = 180

Combine like terms: 1x + 30x = 31x
90 + 31x + -1x = 180

Combine like terms: 31x + -1x = 30x
90 + 30x = 180

Solving
90 + 30x = 180

Solving for variable 'x'.

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

Add '-90' to each side of the equation.
90 + -90 + 30x = 180 + -90

Combine like terms: 90 + -90 = 0
0 + 30x = 180 + -90
30x = 180 + -90

Combine like terms: 180 + -90 = 90
30x = 90

Divide each side by '30'.
x = 3

Simplifying
x = 3

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