Compare 80/42 and 42/80
1st number: 1 38/42, 2nd number: 42/80
80/42 is greater than 42/80
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 42 × 40 = 1680,
80/42 = 80 × 40/42 × 40 = 3200/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
42/80 = 42 × 21/80 × 21 = 882/1680 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 3200/1680 > 882/1680 or 80/42 > 42/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/42 and 84/80 80/84 and 42/80