Solve for n
n=2
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7-2n=3
Swap sides so that all variable terms are on the left hand side.
-2n=3-7
Subtract 7 from both sides.
-2n=-4
Subtract 7 from 3 to get -4.
n=\frac{-4}{-2}
Divide both sides by -2.
n=2
Divide -4 by -2 to get 2.
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