Subtract 8/7 from 7/98
1st number: 7/98, 2nd number: 1 1/7
7/98 - 8/7 is -15/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 7 is 98
Next, find the equivalent fraction of both fractional numbers with denominator 98 - For the 1st fraction, since 98 × 1 = 98,
7/98 = 7 × 1/98 × 1 = 7/98 - Likewise, for the 2nd fraction, since 7 × 14 = 98,
8/7 = 8 × 14/7 × 14 = 112/98 - Subtract the two like fractions:
7/98 - 112/98 = 7 - 112/98 = -105/98 - After reducing the fraction, the answer is -15/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/98-8/7 7/98-16/7 7/98-8/14 21/98-8/7 7/98-24/7 7/98-8/21 35/98-8/7 7/98-40/7 7/98-8/35 49/98-8/7 7/98-56/7 7/98-8/49