(x+40)+(20-x)=180

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Solution for (x+40)+(20-x)=180 equation: 


Simplifying
(x + 40) + (20 + -1x) = 180

Reorder the terms:
(40 + x) + (20 + -1x) = 180

Remove parenthesis around (40 + x)
40 + x + (20 + -1x) = 180

Remove parenthesis around (20 + -1x)
40 + x + 20 + -1x = 180

Reorder the terms:
40 + 20 + x + -1x = 180

Combine like terms: 40 + 20 = 60
60 + x + -1x = 180

Combine like terms: x + -1x = 0
60 + 0 = 180
60 = 180

Solving
60 = 180

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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