Compare 15/21 and 3/8
1521 is greater than 38
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
1521 = 15 × 821 × 8 = 120168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
38 = 3 × 218 × 21 = 63168 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 120168 > 63168 or 1521 > 38
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