Compare 18/84 and 4/15
18/84 is smaller than 4/15
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
18/84 = 18 × 5/84 × 5 = 90/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
4/15 = 4 × 28/15 × 28 = 112/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 90/420 < 112/420 or 18/84 < 4/15
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