Solve for n
n=6
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n-10=\frac{-20}{5}
Multiply -20 and \frac{1}{5} to get \frac{-20}{5}.
n-10=-4
Divide -20 by 5 to get -4.
n=-4+10
Add 10 to both sides.
n=6
Add -4 and 10 to get 6.
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