Subtract 2/8 from 9/7
1st number: 1 2/7, 2nd number: 2/8
9/7 - 2/8 is 29/28.
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,
9/7 = 9 × 8/7 × 8 = 72/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
2/8 = 2 × 7/8 × 7 = 14/56 - Subtract the two like fractions:
72/56 - 14/56 = 72 - 14/56 = 58/56 - After reducing the fraction, the answer is 29/28
- In mixed form: 11/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/7-2/8 9/7-4/8 9/14-2/8 9/7-2/16 27/7-2/8 9/7-6/8 9/21-2/8 9/7-2/24 45/7-2/8 9/7-10/8 9/35-2/8 9/7-2/40 63/7-2/8 9/7-14/8 9/49-2/8 9/7-2/56