7-y=9-(y+2)

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Solution for 7-y=9-(y+2) equation:


Simplifying
7 + -1y = 9 + -1(y + 2)

Reorder the terms:
7 + -1y = 9 + -1(2 + y)
7 + -1y = 9 + (2 * -1 + y * -1)
7 + -1y = 9 + (-2 + -1y)

Combine like terms: 9 + -2 = 7
7 + -1y = 7 + -1y

Add '-7' to each side of the equation.
7 + -7 + -1y = 7 + -7 + -1y

Combine like terms: 7 + -7 = 0
0 + -1y = 7 + -7 + -1y
-1y = 7 + -7 + -1y

Combine like terms: 7 + -7 = 0
-1y = 0 + -1y
-1y = -1y

Add 'y' to each side of the equation.
-1y + y = -1y + y

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

Combine like terms: -1y + y = 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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