Subtract 49/81 from 1/9
1/9 - 49/81 is -40/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 9 × 9 = 81,
1/9 = 1 × 9/9 × 9 = 9/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
49/81 = 49 × 1/81 × 1 = 49/81 - Subtract the two like fractions:
9/81 - 49/81 = 9 - 49/81 = -40/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/9-49/81 1/9-98/81 1/18-49/81 3/9-49/81 1/27-49/81 5/9-49/81 1/45-49/81 7/9-49/81 1/63-49/81