Subtract 1/7 from 90/8
1st number: 11 2/8, 2nd number: 1/7
90/8 - 1/7 is 311/28.
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,
90/8 = 90 × 7/8 × 7 = 630/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
1/7 = 1 × 8/7 × 8 = 8/56 - Subtract the two like fractions:
630/56 - 8/56 = 630 - 8/56 = 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: 90/8-2/7 90/16-1/7 90/8-1/14 90/8-3/7 90/24-1/7 90/8-1/21 90/8-5/7 90/40-1/7 90/8-1/35 90/56-1/7 90/8-1/49