Subtract 4/7 from 21/35
21/35 - 4/7 is 1/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 7 is 35
Next, find the equivalent fraction of both fractional numbers with denominator 35 - For the 1st fraction, since 35 × 1 = 35,
21/35 = 21 × 1/35 × 1 = 21/35 - Likewise, for the 2nd fraction, since 7 × 5 = 35,
4/7 = 4 × 5/7 × 5 = 20/35 - Subtract the two like fractions:
21/35 - 20/35 = 21 - 20/35 = 1/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/35-4/7 21/35-8/7 21/70-4/7 21/35-4/14 63/35-4/7 21/35-12/7 21/35-4/21 21/35-20/7 21/35-4/35 21/35-28/7 21/35-4/49