-42-21=

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Solution for -42-21= equation: 


Simplifying
-42 + -21 = 0

Combine like terms: -42 + -21 = -63
-63 = 0

Solving
-63 = 0

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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