Subtract 3/15 from 28/8
1st number: 3 4/8, 2nd number: 3/15
28/8 - 3/15 is 33/10.
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,
3/15 = 3 × 8/15 × 8 = 24/120 - Subtract the two like fractions:
420/120 - 24/120 = 420 - 24/120 = 396/120 - After reducing the fraction, the answer is 33/10
- In mixed form: 33/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/8-3/15 28/8-6/15 28/16-3/15 28/8-3/30 84/8-3/15 28/8-9/15 28/24-3/15 28/8-3/45 28/40-3/15 28/8-3/75 28/8-21/15 28/56-3/15