Compare 42/63 and 21/15
1st number: 42/63, 2nd number: 1 6/15
42/63 is smaller than 21/15
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 15 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
42/63 = 42 × 5/63 × 5 = 210/315 - Likewise, for the 2nd fraction, since 15 × 21 = 315,
21/15 = 21 × 21/15 × 21 = 441/315 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 210/315 < 441/315 or 42/63 < 21/15
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