-8x+8x-21=-12-16

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Solution for -8x+8x-21=-12-16 equation: 


Simplifying
-8x + 8x + -21 = -12 + -16

Reorder the terms:
-21 + -8x + 8x = -12 + -16

Combine like terms: -8x + 8x = 0
-21 + 0 = -12 + -16
-21 = -12 + -16

Combine like terms: -12 + -16 = -28
-21 = -28

Solving
-21 = -28

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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