Compare 40/81 and 18/70
40/81 is greater than 18/70
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,
40/81 = 40 × 70/81 × 70 = 2800/5670 - Likewise, for the 2nd fraction, since 70 × 81 = 5670,
18/70 = 18 × 81/70 × 81 = 1458/5670 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 2800/5670 > 1458/5670 or 40/81 > 18/70
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