Solve for r
r = \frac{51}{2} = 25\frac{1}{2} = 25.5
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\frac{102}{4}=r
Divide both sides by 4.
\frac{51}{2}=r
Reduce the fraction \frac{102}{4} to lowest terms by extracting and canceling out 2.
r=\frac{51}{2}
Swap sides so that all variable terms are on the left hand side.
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