Compare 28/21 and 90/4
1st number: 1 7/21, 2nd number: 22 2/4
28/21 is smaller than 90/4
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
28/21 = 28 × 4/21 × 4 = 112/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
90/4 = 90 × 21/4 × 21 = 1890/84 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 112/84 < 1890/84 or 28/21 < 90/4
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