Compare 42/27 and 12/21
1st number: 1 15/27, 2nd number: 12/21
42/27 is greater than 12/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 21 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
42/27 = 42 × 7/27 × 7 = 294/189 - Likewise, for the 2nd fraction, since 21 × 9 = 189,
12/21 = 12 × 9/21 × 9 = 108/189 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 294/189 > 108/189 or 42/27 > 12/21
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