Solve for n
n=4
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40=10n
Variable n cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by n.
10n=40
Swap sides so that all variable terms are on the left hand side.
n=\frac{40}{10}
Divide both sides by 10.
n=4
Divide 40 by 10 to get 4.
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