Compare 90/21 and 30/9
1st number: 4 6/21, 2nd number: 3 3/9
90/21 is greater than 30/9
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,
90/21 = 90 × 3/21 × 3 = 270/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
30/9 = 30 × 7/9 × 7 = 210/63 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 270/63 > 210/63 or 90/21 > 30/9
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