90+x-20+x-20=180

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Solution for 90+x-20+x-20=180 equation: 


Simplifying
90 + x + -20 + x + -20 = 180

Reorder the terms:
90 + -20 + -20 + x + x = 180

Combine like terms: 90 + -20 = 70
70 + -20 + x + x = 180

Combine like terms: 70 + -20 = 50
50 + x + x = 180

Combine like terms: x + x = 2x
50 + 2x = 180

Solving
50 + 2x = 180

Solving for variable 'x'.

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

Add '-50' to each side of the equation.
50 + -50 + 2x = 180 + -50

Combine like terms: 50 + -50 = 0
0 + 2x = 180 + -50
2x = 180 + -50

Combine like terms: 180 + -50 = 130
2x = 130

Divide each side by '2'.
x = 65

Simplifying
x = 65

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