Subtract 1/35 from 2/21
2/21 - 1/35 is 1/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 35 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
2/21 = 2 × 5/21 × 5 = 10/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
1/35 = 1 × 3/35 × 3 = 3/105 - Subtract the two like fractions:
10/105 - 3/105 = 10 - 3/105 = 7/105 - After reducing the fraction, the answer is 1/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21-1/35 2/21-2/35 2/42-1/35 2/21-1/70 6/21-1/35 2/21-3/35 2/63-1/35 10/21-1/35 2/21-5/35 14/21-1/35 2/21-7/35