Subtract 28/8 from 5/15
1st number: 5/15, 2nd number: 3 4/8
5/15 - 28/8 is -19/6.
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,
5/15 = 5 × 8/15 × 8 = 40/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
28/8 = 28 × 15/8 × 15 = 420/120 - Subtract the two like fractions:
40/120 - 420/120 = 40 - 420/120 = -380/120 - After reducing the fraction, the answer is -19/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/15-28/8 5/15-56/8 5/30-28/8 5/15-28/16 5/15-84/8 5/45-28/8 5/15-28/24 25/15-28/8 5/75-28/8 5/15-28/40 35/15-28/8 5/15-28/56