Subtract 98/81 from 3/8
1st number: 3/8, 2nd number: 1 17/81
3/8 - 98/81 is -541/648.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 81 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 8 × 81 = 648,
3/8 = 3 × 81/8 × 81 = 243/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
98/81 = 98 × 8/81 × 8 = 784/648 - Subtract the two like fractions:
243/648 - 784/648 = 243 - 784/648 = -541/648
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/8-98/81 3/16-98/81 9/8-98/81 3/24-98/81 15/8-98/81 3/40-98/81 21/8-98/81 3/56-98/81