Compare 21/72 and 5/64
21/72 is greater than 5/64
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 64 is 576
Next, find the equivalent fraction of both fractional numbers with denominator 576 - For the 1st fraction, since 72 × 8 = 576,
21/72 = 21 × 8/72 × 8 = 168/576 - Likewise, for the 2nd fraction, since 64 × 9 = 576,
5/64 = 5 × 9/64 × 9 = 45/576 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 168/576 > 45/576 or 21/72 > 5/64
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