-3y=9-12y

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Solution for -3y=9-12y equation: 


Simplifying
-3y = 9 + -12y

Solving
-3y = 9 + -12y

Solving for variable 'y'.

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

Add '12y' to each side of the equation.
-3y + 12y = 9 + -12y + 12y

Combine like terms: -3y + 12y = 9y
9y = 9 + -12y + 12y

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

Divide each side by '9'.
y = 1

Simplifying
y = 1

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