Subtract 21/28 from 3/98
3/98 - 21/28 is -141/196.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 28 is 196
Next, find the equivalent fraction of both fractional numbers with denominator 196 - For the 1st fraction, since 98 × 2 = 196,
3/98 = 3 × 2/98 × 2 = 6/196 - Likewise, for the 2nd fraction, since 28 × 7 = 196,
21/28 = 21 × 7/28 × 7 = 147/196 - Subtract the two like fractions:
6/196 - 147/196 = 6 - 147/196 = -141/196
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/98-21/28 3/98-42/28 3/98-21/56 9/98-21/28 3/98-63/28 3/98-21/84 15/98-21/28 21/98-21/28