9y-9=12

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Solution for 9y-9=12 equation: 


Simplifying
9y + -9 = 12

Reorder the terms:
-9 + 9y = 12

Solving
-9 + 9y = 12

Solving for variable 'y'.

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

Add '9' to each side of the equation.
-9 + 9 + 9y = 12 + 9

Combine like terms: -9 + 9 = 0
0 + 9y = 12 + 9
9y = 12 + 9

Combine like terms: 12 + 9 = 21
9y = 21

Divide each side by '9'.
y = 2.333333333

Simplifying
y = 2.333333333

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