(x+2y)+(-x-2y)=

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Solution for (x+2y)+(-x-2y)= equation: 


Simplifying
(x + 2y) + (-1x + -2y) = 0

Remove parenthesis around (x + 2y)
x + 2y + (-1x + -2y) = 0

Remove parenthesis around (-1x + -2y)
x + 2y + -1x + -2y = 0

Reorder the terms:
x + -1x + 2y + -2y = 0

Combine like terms: x + -1x = 0
0 + 2y + -2y = 0
2y + -2y = 0

Combine like terms: 2y + -2y = 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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