Compare 90/30 and 30/21
1st number: 3 0/30, 2nd number: 1 9/21
90/30 is greater than 30/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
90/30 = 90 × 7/30 × 7 = 630/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
30/21 = 30 × 10/21 × 10 = 300/210 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 630/210 > 300/210 or 90/30 > 30/21
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