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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