7-y=y-7

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Solution for 7-y=y-7 equation:


Simplifying
7 + -1y = y + -7

Reorder the terms:
7 + -1y = -7 + y

Solving
7 + -1y = -7 + y

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

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

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

Combine like terms: y + -1y = 0
7 + -2y = -7 + 0
7 + -2y = -7

Add '-7' to each side of the equation.
7 + -7 + -2y = -7 + -7

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

Combine like terms: -7 + -7 = -14
-2y = -14

Divide each side by '-2'.
y = 7

Simplifying
y = 7

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