Compare 45/21 and 42/30
1st number: 2 3/21, 2nd number: 1 12/30
45/21 is greater than 42/30
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
45/21 = 45 × 10/21 × 10 = 450/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
42/30 = 42 × 7/30 × 7 = 294/210 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 450/210 > 294/210 or 45/21 > 42/30
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