2x-2y-2x-2y=-4y

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Solution for 2x-2y-2x-2y=-4y equation: 


Simplifying
2x + -2y + -2x + -2y = -4y

Reorder the terms:
2x + -2x + -2y + -2y = -4y

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

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

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

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

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

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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