Subtract 3/20 from 40/16
1st number: 2 8/16, 2nd number: 3/20
40/16 - 3/20 is 47/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
40/16 = 40 × 5/16 × 5 = 200/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
3/20 = 3 × 4/20 × 4 = 12/80 - Subtract the two like fractions:
200/80 - 12/80 = 200 - 12/80 = 188/80 - After reducing the fraction, the answer is 47/20
- In mixed form: 27/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/16-3/20 40/16-6/20 40/32-3/20 40/16-3/40 40/16-9/20 40/48-3/20 40/16-3/60 40/16-15/20 40/80-3/20 40/16-21/20