Evaluate
\frac{21}{50}=0.42
Factor
\frac{3 \cdot 7}{2 \cdot 5 ^ {2}} = 0.42
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\frac{7\times 18}{12\times 25}
Multiply \frac{7}{12} times \frac{18}{25} by multiplying numerator times numerator and denominator times denominator.
\frac{126}{300}
Do the multiplications in the fraction \frac{7\times 18}{12\times 25}.
\frac{21}{50}
Reduce the fraction \frac{126}{300} to lowest terms by extracting and canceling out 6.
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