Compare 21/81 and 56/63
21/81 is smaller than 56/63
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 63 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 81 × 7 = 567,
21/81 = 21 × 7/81 × 7 = 147/567 - Likewise, for the 2nd fraction, since 63 × 9 = 567,
56/63 = 56 × 9/63 × 9 = 504/567 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 147/567 < 504/567 or 21/81 < 56/63
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