Compare 21/3 and 42/21
1st number: 7 0/3, 2nd number: 2 0/21
21/3 is greater than 42/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
21/3 = 21 × 7/3 × 7 = 147/21 - Likewise, for the 2nd fraction, since 21 × 1 = 21,
42/21 = 42 × 1/21 × 1 = 42/21 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 147/21 > 42/21 or 21/3 > 42/21
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