Subtract 98/81 from 30/3
1st number: 10 0/3, 2nd number: 1 17/81
30/3 - 98/81 is 712/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 3 × 27 = 81,
30/3 = 30 × 27/3 × 27 = 810/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
98/81 = 98 × 1/81 × 1 = 98/81 - Subtract the two like fractions:
810/81 - 98/81 = 810 - 98/81 = 712/81 - In mixed form: 864/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/3-98/81 30/6-98/81 90/3-98/81 30/9-98/81 30/15-98/81 30/21-98/81