40+x+x=180

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Solution for 40+x+x=180 equation: 


Simplifying
40 + x + x = 180

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

Solving
40 + 2x = 180

Solving for variable 'x'.

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

Add '-40' to each side of the equation.
40 + -40 + 2x = 180 + -40

Combine like terms: 40 + -40 = 0
0 + 2x = 180 + -40
2x = 180 + -40

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

Divide each side by '2'.
x = 70

Simplifying
x = 70

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