81-8y=-9

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Solution for 81-8y=-9 equation: 


Simplifying
81 + -8y = -9

Solving
81 + -8y = -9

Solving for variable 'y'.

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

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

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

Combine like terms: -9 + -81 = -90
-8y = -90

Divide each side by '-8'.
y = 11.25

Simplifying
y = 11.25

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