Subtract 8/5 from 20/8
1st number: 2 4/8, 2nd number: 1 3/5
20/8 - 8/5 is 9/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 5 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
20/8 = 20 × 5/8 × 5 = 100/40 - Likewise, for the 2nd fraction, since 5 × 8 = 40,
8/5 = 8 × 8/5 × 8 = 64/40 - Subtract the two like fractions:
100/40 - 64/40 = 100 - 64/40 = 36/40 - After reducing the fraction, the answer is 9/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/8-8/5 20/8-16/5 20/16-8/5 20/8-8/10 60/8-8/5 20/8-24/5 20/24-8/5 20/8-8/15 20/8-40/5 20/40-8/5 20/8-8/25 20/8-56/5 20/56-8/5 20/8-8/35