9y-31=89-y

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Solution for 9y-31=89-y equation:


Simplifying
9y + -31 = 89 + -1y

Reorder the terms:
-31 + 9y = 89 + -1y

Solving
-31 + 9y = 89 + -1y

Solving for variable 'y'.

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

Add 'y' to each side of the equation.
-31 + 9y + y = 89 + -1y + y

Combine like terms: 9y + y = 10y
-31 + 10y = 89 + -1y + y

Combine like terms: -1y + y = 0
-31 + 10y = 89 + 0
-31 + 10y = 89

Add '31' to each side of the equation.
-31 + 31 + 10y = 89 + 31

Combine like terms: -31 + 31 = 0
0 + 10y = 89 + 31
10y = 89 + 31

Combine like terms: 89 + 31 = 120
10y = 120

Divide each side by '10'.
y = 12

Simplifying
y = 12

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