Compare 21/30 and 18/14
1st number: 21/30, 2nd number: 1 4/14
21/30 is smaller than 18/14
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 14 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
21/30 = 21 × 7/30 × 7 = 147/210 - Likewise, for the 2nd fraction, since 14 × 15 = 210,
18/14 = 18 × 15/14 × 15 = 270/210 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 147/210 < 270/210 or 21/30 < 18/14
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