-9(81)-9y=81

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Solution for -9(81)-9y=81 equation: 


Simplifying
-9(81) + -9y = 81

Multiply -9 * 81
-729 + -9y = 81

Solving
-729 + -9y = 81

Solving for variable 'y'.

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

Add '729' to each side of the equation.
-729 + 729 + -9y = 81 + 729

Combine like terms: -729 + 729 = 0
0 + -9y = 81 + 729
-9y = 81 + 729

Combine like terms: 81 + 729 = 810
-9y = 810

Divide each side by '-9'.
y = -90

Simplifying
y = -90

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