-81=-9y

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Solution for -81=-9y equation:


Simplifying
-81 = -9y

Solving
-81 = -9y

Solving for variable 'y'.

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

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

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

Add '81' to each side of the equation.
-81 + 81 + 9y = 0 + 81

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

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

Divide each side by '9'.
y = 9

Simplifying
y = 9

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