(13+-9y)+9y=13

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Solution for (13+-9y)+9y=13 equation: 


Simplifying
(13 + -9y) + 9y = 13

Remove parenthesis around (13 + -9y)
13 + -9y + 9y = 13

Combine like terms: -9y + 9y = 0
13 + 0 = 13
13 = 13

Add '-13' to each side of the equation.
13 + -13 = 13 + -13

Combine like terms: 13 + -13 = 0
0 = 13 + -13

Combine like terms: 13 + -13 = 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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