Subtract 40/28 from 20/6
1st number: 3 2/6, 2nd number: 1 12/28
20/6 - 40/28 is 40/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 6 × 14 = 84,
20/6 = 20 × 14/6 × 14 = 280/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
40/28 = 40 × 3/28 × 3 = 120/84 - Subtract the two like fractions:
280/84 - 120/84 = 280 - 120/84 = 160/84 - After reducing the fraction, the answer is 40/21
- In mixed form: 119/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/6-40/28 20/6-80/28 20/12-40/28 20/6-40/56 60/6-40/28 20/18-40/28 20/6-40/84 20/30-40/28 20/42-40/28