9(y-9)=8y

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Solution for 9(y-9)=8y equation:


Simplifying
9(y + -9) = 8y

Reorder the terms:
9(-9 + y) = 8y
(-9 * 9 + y * 9) = 8y
(-81 + 9y) = 8y

Solving
-81 + 9y = 8y

Solving for variable 'y'.

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

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

Combine like terms: 9y + -8y = 1y
-81 + 1y = 8y + -8y

Combine like terms: 8y + -8y = 0
-81 + 1y = 0

Add '81' to each side of the equation.
-81 + 81 + 1y = 0 + 81

Combine like terms: -81 + 81 = 0
0 + 1y = 0 + 81
1y = 0 + 81

Combine like terms: 0 + 81 = 81
1y = 81

Divide each side by '1'.
y = 81

Simplifying
y = 81

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