Compare 90/15 and 40/42
1st number: 6 0/15, 2nd number: 40/42
90/15 is greater than 40/42
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
90/15 = 90 × 14/15 × 14 = 1260/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
40/42 = 40 × 5/42 × 5 = 200/210 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1260/210 > 200/210 or 90/15 > 40/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15 and 80/42 90/30 and 40/42 90/15 and 40/84 90/45 and 40/42 90/75 and 40/42