Compare 21/3 and 72/9
1st number: 7 0/3, 2nd number: 8 0/9
21/3 is smaller than 72/9
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 9 is 9
Next, find the equivalent fraction of both fractional numbers with denominator 9 - For the 1st fraction, since 3 × 3 = 9,
21/3 = 21 × 3/3 × 3 = 63/9 - Likewise, for the 2nd fraction, since 9 × 1 = 9,
72/9 = 72 × 1/9 × 1 = 72/9 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 63/9 < 72/9 or 21/3 < 72/9
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