Subtract 4/21 from 4/35
4/35 - 4/21 is -8/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 35 × 3 = 105,
4/35 = 4 × 3/35 × 3 = 12/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
4/21 = 4 × 5/21 × 5 = 20/105 - Subtract the two like fractions:
12/105 - 20/105 = 12 - 20/105 = -8/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/35-4/21 4/35-8/21 4/70-4/21 4/35-4/42 12/35-4/21 4/35-12/21 4/35-4/63 20/35-4/21 4/35-20/21 28/35-4/21 4/35-28/21