Compare 28/42 and 1/90
28/42 is greater than 1/90
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
28/42 = 28 × 15/42 × 15 = 420/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
1/90 = 1 × 7/90 × 7 = 7/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 420/630 > 7/630 or 28/42 > 1/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42 and 1/90 28/42 and 2/90 28/84 and 1/90 84/42 and 1/90 28/42 and 3/90 28/42 and 5/90 28/42 and 7/90