Subtract 3/9 from 35/21
1st number: 1 14/21, 2nd number: 3/9
35/21 - 3/9 is 4/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
35/21 = 35 × 3/21 × 3 = 105/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
3/9 = 3 × 7/9 × 7 = 21/63 - Subtract the two like fractions:
105/63 - 21/63 = 105 - 21/63 = 84/63 - After reducing the fraction, the answer is 4/3
- In mixed form: 11/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21-3/9 35/21-6/9 35/42-3/9 35/21-3/18 35/63-3/9 35/21-3/27 35/21-15/9 35/21-3/45 35/21-21/9 35/21-3/63