Subtract 7/81 from 4/35
4/35 - 7/81 is 79/2835.
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,
7/81 = 7 × 35/81 × 35 = 245/2835 - Subtract the two like fractions:
324/2835 - 245/2835 = 324 - 245/2835 = 79/2835
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/35-7/81 4/35-14/81 4/70-7/81 12/35-7/81 4/35-21/81 20/35-7/81 4/35-35/81 28/35-7/81 4/35-49/81