Solve for y
y=3
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-3y+12-y=0
Subtract y from both sides.
-4y+12=0
Combine -3y and -y to get -4y.
-4y=-12
Subtract 12 from both sides. Anything subtracted from zero gives its negation.
y=\frac{-12}{-4}
Divide both sides by -4.
y=3
Divide -12 by -4 to get 3.
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