Subtract 4/5 from 45/28
1st number: 1 17/28, 2nd number: 4/5
45/28 - 4/5 is 113/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 5 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
45/28 = 45 × 5/28 × 5 = 225/140 - Likewise, for the 2nd fraction, since 5 × 28 = 140,
4/5 = 4 × 28/5 × 28 = 112/140 - Subtract the two like fractions:
225/140 - 112/140 = 225 - 112/140 = 113/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28-4/5 45/28-8/5 45/56-4/5 45/28-4/10 45/28-12/5 45/84-4/5 45/28-4/15 45/28-20/5 45/28-4/25 45/28-28/5 45/28-4/35