Subtract 6/8 from 15/7
1st number: 2 1/7, 2nd number: 6/8
15/7 - 6/8 is 39/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 7 × 8 = 56,
15/7 = 15 × 8/7 × 8 = 120/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
6/8 = 6 × 7/8 × 7 = 42/56 - Subtract the two like fractions:
120/56 - 42/56 = 120 - 42/56 = 78/56 - After reducing the fraction, the answer is 39/28
- In mixed form: 111/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/7-6/8 15/7-12/8 15/14-6/8 15/7-6/16 45/7-6/8 15/7-18/8 15/21-6/8 15/7-6/24 75/7-6/8 15/7-30/8 15/35-6/8 15/7-6/40 15/7-42/8 15/49-6/8 15/7-6/56