Subtract 14/8 from 90/7
1st number: 12 6/7, 2nd number: 1 6/8
90/7 - 14/8 is 311/28.
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,
90/7 = 90 × 8/7 × 8 = 720/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
14/8 = 14 × 7/8 × 7 = 98/56 - Subtract the two like fractions:
720/56 - 98/56 = 720 - 98/56 = 622/56 - After reducing the fraction, the answer is 311/28
- In mixed form: 113/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/7-28/8 90/14-14/8 90/7-14/16 90/7-42/8 90/21-14/8 90/7-14/24 90/7-70/8 90/35-14/8 90/7-14/40 90/7-98/8 90/49-14/8 90/7-14/56