Compare 45/18 and 90/42
1st number: 2 9/18, 2nd number: 2 6/42
45/18 is greater than 90/42
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
45/18 = 45 × 7/18 × 7 = 315/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
90/42 = 90 × 3/42 × 3 = 270/126 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 315/126 > 270/126 or 45/18 > 90/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/18 and 90/42 45/36 and 90/42 45/18 and 90/84 45/54 and 90/42 45/90 and 90/42