Compare 3/12 and 9/42
3/12 is greater than 9/42
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
3/12 = 3 × 7/12 × 7 = 21/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
9/42 = 9 × 2/42 × 2 = 18/84 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 21/84 > 18/84 or 3/12 > 9/42
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