2y-2y+21=

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Solution for 2y-2y+21= equation: 


Simplifying
2y + -2y + 21 = 0

Reorder the terms:
21 + 2y + -2y = 0

Combine like terms: 2y + -2y = 0
21 + 0 = 0
21 = 0

Solving
21 = 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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