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\frac{7\times 40}{2\times 7}=20
Multiply \frac{7}{2} times \frac{40}{7} by multiplying numerator times numerator and denominator times denominator.
\frac{40}{2}=20
Cancel out 7 in both numerator and denominator.
20=20
Divide 40 by 2 to get 20.
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Compare 20 and 20.
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