Subtract 20/80 from 10/5
1st number: 2 0/5, 2nd number: 20/80
10/5 - 20/80 is 7/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 5 × 16 = 80,
10/5 = 10 × 16/5 × 16 = 160/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
20/80 = 20 × 1/80 × 1 = 20/80 - Subtract the two like fractions:
160/80 - 20/80 = 160 - 20/80 = 140/80 - After reducing the fraction, the answer is 7/4
- In mixed form: 13/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/5-20/80 10/5-40/80 30/5-20/80 10/5-60/80 10/15-20/80 50/5-20/80 10/25-20/80 70/5-20/80 10/35-20/80