Subtract 21/8 from 98/15
1st number: 6 8/15, 2nd number: 2 5/8
98/15 - 21/8 is 469/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
98/15 = 98 × 8/15 × 8 = 784/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
21/8 = 21 × 15/8 × 15 = 315/120 - Subtract the two like fractions:
784/120 - 315/120 = 784 - 315/120 = 469/120 - In mixed form: 3109/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/15-42/8 98/30-21/8 98/15-21/16 98/15-63/8 98/45-21/8 98/15-21/24 98/75-21/8 98/15-21/40 98/15-21/56