-4y+4y=-20

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Solution for -4y+4y=-20 equation: 


Simplifying
-4y + 4y = -20

Combine like terms: -4y + 4y = 0
0 = -20

Solving
0 = -20

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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