Compare 7/18 and 21/64
7/18 is greater than 21/64
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 64 is 576
Next, find the equivalent fraction of both fractional numbers with denominator 576 - For the 1st fraction, since 18 × 32 = 576,
7/18 = 7 × 32/18 × 32 = 224/576 - Likewise, for the 2nd fraction, since 64 × 9 = 576,
21/64 = 21 × 9/64 × 9 = 189/576 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 224/576 > 189/576 or 7/18 > 21/64
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