Subtract 18/98 from 21/15
1st number: 1 6/15, 2nd number: 18/98
21/15 - 18/98 is 298/245.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 98 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 15 × 98 = 1470,
21/15 = 21 × 98/15 × 98 = 2058/1470 - Likewise, for the 2nd fraction, since 98 × 15 = 1470,
18/98 = 18 × 15/98 × 15 = 270/1470 - Subtract the two like fractions:
2058/1470 - 270/1470 = 2058 - 270/1470 = 1788/1470 - After reducing the fraction, the answer is 298/245
- In mixed form: 153/245
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/15-18/98 21/15-36/98 21/30-18/98 63/15-18/98 21/15-54/98 21/45-18/98 21/15-90/98 21/75-18/98