3(-8-9)=-21

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Solution for 3(-8-9)=-21 equation: 


Simplifying
3(-8 + -9) = -21

Combine like terms: -8 + -9 = -17
3(-17) = -21

Multiply 3 * -17
-51 = -21

Solving
-51 = -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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