Compare 18/81 and 7/80
18/81 is greater than 7/80
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 80 is 6480
Next, find the equivalent fraction of both fractional numbers with denominator 6480 - For the 1st fraction, since 81 × 80 = 6480,
18/81 = 18 × 80/81 × 80 = 1440/6480 - Likewise, for the 2nd fraction, since 80 × 81 = 6480,
7/80 = 7 × 81/80 × 81 = 567/6480 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1440/6480 > 567/6480 or 18/81 > 7/80
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