Subtract 15/7 from 4/8
1st number: 4/8, 2nd number: 2 1/7
4/8 - 15/7 is -23/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 7 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 8 × 7 = 56,
4/8 = 4 × 7/8 × 7 = 28/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
15/7 = 15 × 8/7 × 8 = 120/56 - Subtract the two like fractions:
28/56 - 120/56 = 28 - 120/56 = -92/56 - After reducing the fraction, the answer is -23/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/8-30/7 4/16-15/7 4/8-15/14 12/8-15/7 4/8-45/7 4/24-15/7 4/8-15/21 20/8-15/7 4/8-75/7 4/40-15/7 4/8-15/35 28/8-15/7 4/56-15/7 4/8-15/49