Compare 50/81 and 30/80
50/81 is greater than 30/80
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,
50/81 = 50 × 80/81 × 80 = 4000/6480 - Likewise, for the 2nd fraction, since 80 × 81 = 6480,
30/80 = 30 × 81/80 × 81 = 2430/6480 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 4000/6480 > 2430/6480 or 50/81 > 30/80
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