Subtract 28/15 from 28/8
1st number: 3 4/8, 2nd number: 1 13/15
28/8 - 28/15 is 49/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
28/8 = 28 × 15/8 × 15 = 420/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
28/15 = 28 × 8/15 × 8 = 224/120 - Subtract the two like fractions:
420/120 - 224/120 = 420 - 224/120 = 196/120 - After reducing the fraction, the answer is 49/30
- In mixed form: 119/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/8-28/15 28/8-56/15 28/16-28/15 28/8-28/30 84/8-28/15 28/8-84/15 28/24-28/15 28/8-28/45 28/40-28/15 28/8-28/75 28/56-28/15