Compare 10/21 and 20/49
10/21 is greater than 20/49
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 49 is 147
Next, find the equivalent fraction of both fractional numbers with denominator 147 - For the 1st fraction, since 21 × 7 = 147,
10/21 = 10 × 7/21 × 7 = 70/147 - Likewise, for the 2nd fraction, since 49 × 3 = 147,
20/49 = 20 × 3/49 × 3 = 60/147 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 70/147 > 60/147 or 10/21 > 20/49
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