Subtract 28/6 from 35/21
1st number: 1 14/21, 2nd number: 4 4/6
35/21 - 28/6 is -3/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
35/21 = 35 × 2/21 × 2 = 70/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
28/6 = 28 × 7/6 × 7 = 196/42 - Subtract the two like fractions:
70/42 - 196/42 = 70 - 196/42 = -126/42 - After reducing the fraction, the answer is -3/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21-28/6 35/21-56/6 35/42-28/6 35/21-28/12 35/21-84/6 35/63-28/6 35/21-28/18 35/21-28/30 35/21-28/42