Solve for n
n=36
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12\times 15=5n
Variable n cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 12n, the least common multiple of n,12.
180=5n
Multiply 12 and 15 to get 180.
5n=180
Swap sides so that all variable terms are on the left hand side.
n=\frac{180}{5}
Divide both sides by 5.
n=36
Divide 180 by 5 to get 36.
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