Compare 42/24 and 30/21
1st number: 1 18/24, 2nd number: 1 9/21
42/24 is greater than 30/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
42/24 = 42 × 7/24 × 7 = 294/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
30/21 = 30 × 8/21 × 8 = 240/168 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 294/168 > 240/168 or 42/24 > 30/21
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