Solve for n
n=18
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5n=6\times 15
Variable n cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 6n, the least common multiple of 6,n.
5n=90
Multiply 6 and 15 to get 90.
n=\frac{90}{5}
Divide both sides by 5.
n=18
Divide 90 by 5 to get 18.
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