Subtract 4/8 from 1/7
1/7 - 4/8 is -5/14.
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,
1/7 = 1 × 8/7 × 8 = 8/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
4/8 = 4 × 7/8 × 7 = 28/56 - Subtract the two like fractions:
8/56 - 28/56 = 8 - 28/56 = -20/56 - After reducing the fraction, the answer is -5/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/7-4/8 1/14-4/8 1/7-4/16 3/7-4/8 1/7-12/8 1/21-4/8 1/7-4/24 5/7-4/8 1/7-20/8 1/35-4/8 1/7-4/40 1/7-28/8 1/49-4/8 1/7-4/56