Subtract 28/24 from 21/98
1st number: 21/98, 2nd number: 1 4/24
21/98 - 28/24 is -20/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 24 is 1176
Next, find the equivalent fraction of both fractional numbers with denominator 1176 - For the 1st fraction, since 98 × 12 = 1176,
21/98 = 21 × 12/98 × 12 = 252/1176 - Likewise, for the 2nd fraction, since 24 × 49 = 1176,
28/24 = 28 × 49/24 × 49 = 1372/1176 - Subtract the two like fractions:
252/1176 - 1372/1176 = 252 - 1372/1176 = -1120/1176 - After reducing the fraction, the answer is -20/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/98-28/24 21/98-56/24 21/98-28/48 63/98-28/24 21/98-84/24 21/98-28/72