-9+2=-21

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Solution for -9+2=-21 equation: 


Simplifying
-9 + 2 = -21

Combine like terms: -9 + 2 = -7
-7 = -21

Solving
-7 = -21

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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