Subtract 9/98 from 21/8
1st number: 2 5/8, 2nd number: 9/98
21/8 - 9/98 is 993/392.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 98 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 8 × 49 = 392,
21/8 = 21 × 49/8 × 49 = 1029/392 - Likewise, for the 2nd fraction, since 98 × 4 = 392,
9/98 = 9 × 4/98 × 4 = 36/392 - Subtract the two like fractions:
1029/392 - 36/392 = 1029 - 36/392 = 993/392 - In mixed form: 2209/392
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/8-9/98 21/8-18/98 21/16-9/98 63/8-9/98 21/8-27/98 21/24-9/98 21/8-45/98 21/40-9/98 21/8-63/98 21/56-9/98