Evaluate
15
Factor
3\times 5
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\frac{20+1}{5}\times \frac{3\times 7+4}{7}
Multiply 4 and 5 to get 20.
\frac{21}{5}\times \frac{3\times 7+4}{7}
Add 20 and 1 to get 21.
\frac{21}{5}\times \frac{21+4}{7}
Multiply 3 and 7 to get 21.
\frac{21}{5}\times \frac{25}{7}
Add 21 and 4 to get 25.
\frac{21\times 25}{5\times 7}
Multiply \frac{21}{5} times \frac{25}{7} by multiplying numerator times numerator and denominator times denominator.
\frac{525}{35}
Do the multiplications in the fraction \frac{21\times 25}{5\times 7}.
15
Divide 525 by 35 to get 15.
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Limits
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