Subtract 8/21 from 4/35
4/35 - 8/21 is -4/15.
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,
8/21 = 8 × 5/21 × 5 = 40/105 - Subtract the two like fractions:
12/105 - 40/105 = 12 - 40/105 = -28/105 - After reducing the fraction, the answer is -4/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/35-8/21 4/35-16/21 4/70-8/21 4/35-8/42 12/35-8/21 4/35-24/21 4/35-8/63 20/35-8/21 4/35-40/21 28/35-8/21 4/35-56/21