Compare 21/81 and 1/70
21/81 is greater than 1/70
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 70 is 5670
Next, find the equivalent fraction of both fractional numbers with denominator 5670 - For the 1st fraction, since 81 × 70 = 5670,
21/81 = 21 × 70/81 × 70 = 1470/5670 - Likewise, for the 2nd fraction, since 70 × 81 = 5670,
1/70 = 1 × 81/70 × 81 = 81/5670 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1470/5670 > 81/5670 or 21/81 > 1/70
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