(7+2y)-2y=7

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Solution for (7+2y)-2y=7 equation: 


Simplifying
(7 + 2y) + -2y = 7

Remove parenthesis around (7 + 2y)
7 + 2y + -2y = 7

Combine like terms: 2y + -2y = 0
7 + 0 = 7
7 = 7

Add '-7' to each side of the equation.
7 + -7 = 7 + -7

Combine like terms: 7 + -7 = 0
0 = 7 + -7

Combine like terms: 7 + -7 = 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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