Compare 21/28 and 15/35
21/28 is greater than 15/35
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
21/28 = 21 × 5/28 × 5 = 105/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
15/35 = 15 × 4/35 × 4 = 60/140 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 105/140 > 60/140 or 21/28 > 15/35
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