Subtract 28/20 from 40/6
1st number: 6 4/6, 2nd number: 1 8/20
40/6 - 28/20 is 79/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 6 × 10 = 60,
40/6 = 40 × 10/6 × 10 = 400/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
28/20 = 28 × 3/20 × 3 = 84/60 - Subtract the two like fractions:
400/60 - 84/60 = 400 - 84/60 = 316/60 - After reducing the fraction, the answer is 79/15
- In mixed form: 54/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/6-28/20 40/6-56/20 40/12-28/20 40/6-28/40 40/6-84/20 40/18-28/20 40/6-28/60 40/30-28/20 40/42-28/20