81=5Y-9

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Solution for 81=5Y-9 equation:


Simplifying
81 = 5Y + -9

Reorder the terms:
81 = -9 + 5Y

Solving
81 = -9 + 5Y

Solving for variable 'Y'.

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

Add '-5Y' to each side of the equation.
81 + -5Y = -9 + 5Y + -5Y

Combine like terms: 5Y + -5Y = 0
81 + -5Y = -9 + 0
81 + -5Y = -9

Add '-81' to each side of the equation.
81 + -81 + -5Y = -9 + -81

Combine like terms: 81 + -81 = 0
0 + -5Y = -9 + -81
-5Y = -9 + -81

Combine like terms: -9 + -81 = -90
-5Y = -90

Divide each side by '-5'.
Y = 18

Simplifying
Y = 18

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