Compare 21/63 and 16/20
21/63 is smaller than 16/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 20 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 63 × 20 = 1260,
21/63 = 21 × 20/63 × 20 = 420/1260 - Likewise, for the 2nd fraction, since 20 × 63 = 1260,
16/20 = 16 × 63/20 × 63 = 1008/1260 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 420/1260 < 1008/1260 or 21/63 < 16/20
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