Add 20/8 and 3/5
1st number: 2 4/8, 2nd number: 3/5
20/8 + 3/5 is 31/10.
Steps for adding 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,
3/5 = 3 × 8/5 × 8 = 24/40 - Add the two like fractions:
100/40 + 24/40 = 100 + 24/40 = 124/40 - 124/40 simplified gives 31/10
- So, 20/8 + 3/5 = 31/10
In mixed form: 31/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/8+3/5 20/8+6/5 20/16+3/5 20/8+3/10 60/8+3/5 20/8+9/5 20/24+3/5 20/8+3/15 20/8+15/5 20/40+3/5 20/8+3/25 20/8+21/5 20/56+3/5 20/8+3/35