Compare 28/21 and 70/9
1st number: 1 7/21, 2nd number: 7 7/9
28/21 is smaller than 70/9
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,
28/21 = 28 × 3/21 × 3 = 84/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
70/9 = 70 × 7/9 × 7 = 490/63 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 84/63 < 490/63 or 28/21 < 70/9
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