Compare 21/45 and 70/35
1st number: 21/45, 2nd number: 2 0/35
21/45 is smaller than 70/35
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 35 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
21/45 = 21 × 7/45 × 7 = 147/315 - Likewise, for the 2nd fraction, since 35 × 9 = 315,
70/35 = 70 × 9/35 × 9 = 630/315 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 147/315 < 630/315 or 21/45 < 70/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/45 and 70/35 21/90 and 70/35 63/45 and 70/35