Compare 12/21 and 84/9
1st number: 12/21, 2nd number: 9 3/9
12/21 is smaller than 84/9
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
12/21 = 12 × 3/21 × 3 = 36/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
84/9 = 84 × 7/9 × 7 = 588/63 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 36/63 < 588/63 or 12/21 < 84/9
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