Compare 21/35 and 12/20
21/35 is equivalent to 12/20
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,
21/35 = 21 × 4/35 × 4 = 84/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
12/20 = 12 × 7/20 × 7 = 84/140 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 84/140 = 84/140 or 21/35 = 12/20
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