Subtract 28/7 from 2/8
1st number: 2/8, 2nd number: 4 0/7
2/8 - 28/7 is -15/4.
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,
2/8 = 2 × 7/8 × 7 = 14/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
28/7 = 28 × 8/7 × 8 = 224/56 - Subtract the two like fractions:
14/56 - 224/56 = 14 - 224/56 = -210/56 - After reducing the fraction, the answer is -15/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/8-28/7 2/8-56/7 2/16-28/7 2/8-28/14 6/8-28/7 2/8-84/7 2/24-28/7 2/8-28/21 10/8-28/7 2/40-28/7 2/8-28/35 14/8-28/7 2/56-28/7 2/8-28/49