Compare 25/2 and 72/21
1st number: 12 1/2, 2nd number: 3 9/21
25/2 is greater than 72/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
25/2 = 25 × 21/2 × 21 = 525/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
72/21 = 72 × 2/21 × 2 = 144/42 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 525/42 > 144/42 or 25/2 > 72/21
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