9y-9=-81+y

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Solution for 9y-9=-81+y equation:


Simplifying
9y + -9 = -81 + y

Reorder the terms:
-9 + 9y = -81 + y

Solving
-9 + 9y = -81 + 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.
-9 + 9y + -1y = -81 + y + -1y

Combine like terms: 9y + -1y = 8y
-9 + 8y = -81 + y + -1y

Combine like terms: y + -1y = 0
-9 + 8y = -81 + 0
-9 + 8y = -81

Add '9' to each side of the equation.
-9 + 9 + 8y = -81 + 9

Combine like terms: -9 + 9 = 0
0 + 8y = -81 + 9
8y = -81 + 9

Combine like terms: -81 + 9 = -72
8y = -72

Divide each side by '8'.
y = -9

Simplifying
y = -9

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