21-159=180

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Solution for 21-159=180 equation: 


Simplifying
21 + -159 = 180

Combine like terms: 21 + -159 = -138
-138 = 180

Solving
-138 = 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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