Subtract 10/80 from 20/2
1st number: 10 0/2, 2nd number: 10/80
20/2 - 10/80 is 79/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 2 × 40 = 80,
20/2 = 20 × 40/2 × 40 = 800/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
10/80 = 10 × 1/80 × 1 = 10/80 - Subtract the two like fractions:
800/80 - 10/80 = 800 - 10/80 = 790/80 - After reducing the fraction, the answer is 79/8
- In mixed form: 97/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/2-10/80 20/2-20/80 20/4-10/80 60/2-10/80 20/2-30/80 20/6-10/80 20/2-50/80 20/10-10/80 20/2-70/80 20/14-10/80