Subtract 28/7 from 20/98
1st number: 20/98, 2nd number: 4 0/7
20/98 - 28/7 is -186/49.
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,
20/98 = 20 × 1/98 × 1 = 20/98 - Likewise, for the 2nd fraction, since 7 × 14 = 98,
28/7 = 28 × 14/7 × 14 = 392/98 - Subtract the two like fractions:
20/98 - 392/98 = 20 - 392/98 = -372/98 - After reducing the fraction, the answer is -186/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/98-28/7 20/98-56/7 20/98-28/14 60/98-28/7 20/98-84/7 20/98-28/21 20/98-28/35 20/98-28/49