Subtract 28/5 from 28/45
1st number: 28/45, 2nd number: 5 3/5
28/45 - 28/5 is -224/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 5 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 45 × 1 = 45,
28/45 = 28 × 1/45 × 1 = 28/45 - Likewise, for the 2nd fraction, since 5 × 9 = 45,
28/5 = 28 × 9/5 × 9 = 252/45 - Subtract the two like fractions:
28/45 - 252/45 = 28 - 252/45 = -224/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/45-28/5 28/45-56/5 28/90-28/5 28/45-28/10 84/45-28/5 28/45-84/5 28/45-28/15 28/45-28/25 28/45-28/35