Compare 15/5 and 21/45
1st number: 3 0/5, 2nd number: 21/45
15/5 is greater than 21/45
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
15/5 = 15 × 9/5 × 9 = 135/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
21/45 = 21 × 1/45 × 1 = 21/45 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 135/45 > 21/45 or 15/5 > 21/45
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