Subtract 7/81 from 4/24
4/24 - 7/81 is 13/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 81 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 24 × 27 = 648,
4/24 = 4 × 27/24 × 27 = 108/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
7/81 = 7 × 8/81 × 8 = 56/648 - Subtract the two like fractions:
108/648 - 56/648 = 108 - 56/648 = 52/648 - After reducing the fraction, the answer is 13/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/24-7/81 4/24-14/81 4/48-7/81 12/24-7/81 4/24-21/81 4/72-7/81 20/24-7/81 4/24-35/81 28/24-7/81 4/24-49/81