Compare 72/18 and 21/9
1st number: 4 0/18, 2nd number: 2 3/9
72/18 is greater than 21/9
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 18 × 1 = 18,
72/18 = 72 × 1/18 × 1 = 72/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
21/9 = 21 × 2/9 × 2 = 42/18 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 72/18 > 42/18 or 72/18 > 21/9
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