9y-81=-20y

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Solution for 9y-81=-20y equation:


Simplifying
9y + -81 = -20y

Reorder the terms:
-81 + 9y = -20y

Solving
-81 + 9y = -20y

Solving for variable 'y'.

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

Add '20y' to each side of the equation.
-81 + 9y + 20y = -20y + 20y

Combine like terms: 9y + 20y = 29y
-81 + 29y = -20y + 20y

Combine like terms: -20y + 20y = 0
-81 + 29y = 0

Add '81' to each side of the equation.
-81 + 81 + 29y = 0 + 81

Combine like terms: -81 + 81 = 0
0 + 29y = 0 + 81
29y = 0 + 81

Combine like terms: 0 + 81 = 81
29y = 81

Divide each side by '29'.
y = 2.793103448

Simplifying
y = 2.793103448

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