-21+4y=4y

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Solution for -21+4y=4y equation: 


Simplifying
-21 + 4y = 4y

Add '-4y' to each side of the equation.
-21 + 4y + -4y = 4y + -4y

Combine like terms: 4y + -4y = 0
-21 + 0 = 4y + -4y
-21 = 4y + -4y

Combine like terms: 4y + -4y = 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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