Compare 42/72 and 5/80
42/72 is greater than 5/80
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 72 × 10 = 720,
42/72 = 42 × 10/72 × 10 = 420/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
5/80 = 5 × 9/80 × 9 = 45/720 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 420/720 > 45/720 or 42/72 > 5/80
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