Subtract 9/20 from 80/2
1st number: 40 0/2, 2nd number: 9/20
80/2 - 9/20 is 791/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 2 × 10 = 20,
80/2 = 80 × 10/2 × 10 = 800/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
9/20 = 9 × 1/20 × 1 = 9/20 - Subtract the two like fractions:
800/20 - 9/20 = 800 - 9/20 = 791/20 - In mixed form: 3911/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/2-18/20 80/4-9/20 80/2-9/40 80/2-27/20 80/6-9/20 80/2-9/60 80/2-45/20 80/10-9/20 80/2-63/20 80/14-9/20