Subtract 28/8 from 3/15
1st number: 3/15, 2nd number: 3 4/8
3/15 - 28/8 is -33/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
3/15 = 3 × 8/15 × 8 = 24/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
28/8 = 28 × 15/8 × 15 = 420/120 - Subtract the two like fractions:
24/120 - 420/120 = 24 - 420/120 = -396/120 - After reducing the fraction, the answer is -33/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/15-28/8 3/15-56/8 3/30-28/8 3/15-28/16 9/15-28/8 3/15-84/8 3/45-28/8 3/15-28/24 3/75-28/8 3/15-28/40 21/15-28/8 3/15-28/56