Solve for r
r=5
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60=12r
Variable r cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by r.
12r=60
Swap sides so that all variable terms are on the left hand side.
r=\frac{60}{12}
Divide both sides by 12.
r=5
Divide 60 by 12 to get 5.
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