Subtract 80/8 from 7/15
1st number: 7/15, 2nd number: 10 0/8
7/15 - 80/8 is -143/15.
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,
80/8 = 80 × 15/8 × 15 = 1200/120 - Subtract the two like fractions:
56/120 - 1200/120 = 56 - 1200/120 = -1144/120 - After reducing the fraction, the answer is -143/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/15-80/8 7/30-80/8 7/15-80/16 21/15-80/8 7/45-80/8 7/15-80/24 35/15-80/8 7/75-80/8 7/15-80/40 49/15-80/8 7/15-80/56