Subtract 28/8 from 72/7
1st number: 10 2/7, 2nd number: 3 4/8
72/7 - 28/8 is 95/14.
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,
72/7 = 72 × 8/7 × 8 = 576/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
28/8 = 28 × 7/8 × 7 = 196/56 - Subtract the two like fractions:
576/56 - 196/56 = 576 - 196/56 = 380/56 - After reducing the fraction, the answer is 95/14
- In mixed form: 611/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/7-56/8 72/14-28/8 72/7-28/16 72/7-84/8 72/21-28/8 72/7-28/24 72/35-28/8 72/7-28/40 72/49-28/8 72/7-28/56