4-2y+2y=8

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Solution for 4-2y+2y=8 equation: 


Simplifying
4 + -2y + 2y = 8

Combine like terms: -2y + 2y = 0
4 + 0 = 8
4 = 8

Solving
4 = 8

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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