Compare 42/8 and 21/15
1st number: 5 2/8, 2nd number: 1 6/15
42/8 is greater than 21/15
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
42/8 = 42 × 15/8 × 15 = 630/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
21/15 = 21 × 8/15 × 8 = 168/120 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 630/120 > 168/120 or 42/8 > 21/15
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