Compare 45/70 and 56/90
45/70 is greater than 56/90
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
45/70 = 45 × 9/70 × 9 = 405/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
56/90 = 56 × 7/90 × 7 = 392/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 405/630 > 392/630 or 45/70 > 56/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/70 and 56/90