Compare 21/18 and 30/72
1st number: 1 3/18, 2nd number: 30/72
21/18 is greater than 30/72
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
21/18 = 21 × 4/18 × 4 = 84/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
30/72 = 30 × 1/72 × 1 = 30/72 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 84/72 > 30/72 or 21/18 > 30/72
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