Add 5/8 and 18/20
5/8 + 18/20 is 61/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
5/8 = 5 × 5/8 × 5 = 25/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
18/20 = 18 × 2/20 × 2 = 36/40 - Add the two like fractions:
25/40 + 36/40 = 25 + 36/40 = 61/40 - So, 5/8 + 18/20 = 61/40
In mixed form: 121/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/8+18/20 5/8+36/20 5/16+18/20 5/8+18/40 15/8+18/20 5/8+54/20 5/24+18/20 5/8+18/60 25/8+18/20 5/8+90/20 5/40+18/20 35/8+18/20 5/56+18/20