Subtract 35/81 from 2/15
2/15 - 35/81 is -121/405.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 15 × 27 = 405,
2/15 = 2 × 27/15 × 27 = 54/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
35/81 = 35 × 5/81 × 5 = 175/405 - Subtract the two like fractions:
54/405 - 175/405 = 54 - 175/405 = -121/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/15-35/81 2/15-70/81 2/30-35/81 6/15-35/81 2/45-35/81 10/15-35/81 2/75-35/81 14/15-35/81