Subtract 2/7 from 12/8
1st number: 1 4/8, 2nd number: 2/7
12/8 - 2/7 is 17/14.
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,
12/8 = 12 × 7/8 × 7 = 84/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
2/7 = 2 × 8/7 × 8 = 16/56 - Subtract the two like fractions:
84/56 - 16/56 = 84 - 16/56 = 68/56 - After reducing the fraction, the answer is 17/14
- In mixed form: 13/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/8-2/7 12/8-4/7 12/16-2/7 12/8-2/14 36/8-2/7 12/8-6/7 12/24-2/7 12/8-2/21 60/8-2/7 12/8-10/7 12/40-2/7 12/8-2/35 84/8-2/7 12/8-14/7 12/56-2/7 12/8-2/49