Compare 72/21 and 98/40
1st number: 3 9/21, 2nd number: 2 18/40
72/21 is greater than 98/40
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 21 × 40 = 840,
72/21 = 72 × 40/21 × 40 = 2880/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
98/40 = 98 × 21/40 × 21 = 2058/840 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 2880/840 > 2058/840 or 72/21 > 98/40
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