Subtract 7/8 from 15/7
1st number: 2 1/7, 2nd number: 7/8
157 - 78 is 7156.
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,
157 = 15 × 87 × 8 = 12056 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
78 = 7 × 78 × 7 = 4956 - Subtract the two like fractions:
12056 - 4956 = 120 - 4956 = 7156 - In mixed form: 11556
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/7-7/8 15/7-14/8 15/14-7/8 15/7-7/16 45/7-7/8 15/7-21/8 15/21-7/8 15/7-7/24 75/7-7/8 15/7-35/8 15/35-7/8 15/7-7/40 15/7-49/8 15/49-7/8 15/7-7/56