Subtract 15/81 from 4/35
4/35 - 15/81 is -67/945.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 81 is 2835
Next, find the equivalent fraction of both fractional numbers with denominator 2835 - For the 1st fraction, since 35 × 81 = 2835,
4/35 = 4 × 81/35 × 81 = 324/2835 - Likewise, for the 2nd fraction, since 81 × 35 = 2835,
15/81 = 15 × 35/81 × 35 = 525/2835 - Subtract the two like fractions:
324/2835 - 525/2835 = 324 - 525/2835 = -201/2835 - After reducing the fraction, the answer is -67/945
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/35-15/81 4/35-30/81 4/70-15/81 12/35-15/81 4/35-45/81 20/35-15/81 4/35-75/81 28/35-15/81