Solve for n
n=11
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220=4\times 5n
Calculate 2 to the power of 2 and get 4.
220=20n
Multiply 4 and 5 to get 20.
20n=220
Swap sides so that all variable terms are on the left hand side.
n=\frac{220}{20}
Divide both sides by 20.
n=11
Divide 220 by 20 to get 11.
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