Subtract 5/8 from 7/15
7/15 - 5/8 is -19/120.
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,
7/15 = 7 × 8/15 × 8 = 56/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
5/8 = 5 × 15/8 × 15 = 75/120 - Subtract the two like fractions:
56/120 - 75/120 = 56 - 75/120 = -19/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/15-5/8 7/15-10/8 7/30-5/8 7/15-5/16 21/15-5/8 7/15-15/8 7/45-5/8 7/15-5/24 35/15-5/8 7/15-25/8 7/75-5/8 7/15-5/40 49/15-5/8 7/15-35/8 7/15-5/56