Compare 20/72 and 28/63
20/72 is smaller than 28/63
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
20/72 = 20 × 7/72 × 7 = 140/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
28/63 = 28 × 8/63 × 8 = 224/504 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 140/504 < 224/504 or 20/72 < 28/63
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