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Solve for n
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2n+2=2y
Add 2y to both sides. Anything plus zero gives itself.
2n=2y-2
Subtract 2 from both sides.
\frac{2n}{2}=\frac{2y-2}{2}
Divide both sides by 2.
n=\frac{2y-2}{2}
Dividing by 2 undoes the multiplication by 2.
n=y-1
Divide -2+2y by 2.
-2y+2=-2n
Subtract 2n from both sides. Anything subtracted from zero gives its negation.
-2y=-2n-2
Subtract 2 from both sides.
\frac{-2y}{-2}=\frac{-2n-2}{-2}
Divide both sides by -2.
y=\frac{-2n-2}{-2}
Dividing by -2 undoes the multiplication by -2.
y=n+1
Divide -2n-2 by -2.