Compare 90/28 and 21/70
1st number: 3 6/28, 2nd number: 21/70
90/28 is greater than 21/70
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
90/28 = 90 × 5/28 × 5 = 450/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
21/70 = 21 × 2/70 × 2 = 42/140 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 450/140 > 42/140 or 90/28 > 21/70
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