Compare 42/9 and 21/7
1st number: 4 6/9, 2nd number: 3 0/7
42/9 is greater than 21/7
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
42/9 = 42 × 7/9 × 7 = 294/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
21/7 = 21 × 9/7 × 9 = 189/63 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 294/63 > 189/63 or 42/9 > 21/7
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