Compare 15/21 and 2/4
15/21 is greater than 2/4
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
15/21 = 15 × 4/21 × 4 = 60/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
2/4 = 2 × 21/4 × 21 = 42/84 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 60/84 > 42/84 or 15/21 > 2/4
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