140+x+x=180

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Solution for 140+x+x=180 equation: 


Simplifying
140 + x + x = 180

Combine like terms: x + x = 2x
140 + 2x = 180

Solving
140 + 2x = 180

Solving for variable 'x'.

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

Add '-140' to each side of the equation.
140 + -140 + 2x = 180 + -140

Combine like terms: 140 + -140 = 0
0 + 2x = 180 + -140
2x = 180 + -140

Combine like terms: 180 + -140 = 40
2x = 40

Divide each side by '2'.
x = 20

Simplifying
x = 20

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