Subtract 10/7 from 98/21
1st number: 4 14/21, 2nd number: 1 3/7
98/21 - 10/7 is 68/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 21 × 1 = 21,
98/21 = 98 × 1/21 × 1 = 98/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
10/7 = 10 × 3/7 × 3 = 30/21 - Subtract the two like fractions:
98/21 - 30/21 = 98 - 30/21 = 68/21 - In mixed form: 35/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/21-20/7 98/42-10/7 98/21-10/14 98/21-30/7 98/63-10/7 98/21-10/21 98/21-50/7 98/21-10/35 98/21-70/7 98/21-10/49