Compare 18/35 and 21/20
1st number: 18/35, 2nd number: 1 1/20
18/35 is smaller than 21/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 35 × 4 = 140,
18/35 = 18 × 4/35 × 4 = 72/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
21/20 = 21 × 7/20 × 7 = 147/140 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 72/140 < 147/140 or 18/35 < 21/20
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