Compare 18/63 and 42/84
18/63 is smaller than 42/84
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
18/63 = 18 × 4/63 × 4 = 72/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
42/84 = 42 × 3/84 × 3 = 126/252 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 72/252 < 126/252 or 18/63 < 42/84
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