Compare 45/12 and 81/72
1st number: 3 9/12, 2nd number: 1 9/72
45/12 is greater than 81/72
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 12 × 6 = 72,
45/12 = 45 × 6/12 × 6 = 270/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
81/72 = 81 × 1/72 × 1 = 81/72 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 270/72 > 81/72 or 45/12 > 81/72
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