Add 18/3 and 15/8
1st number: 6 0/3, 2nd number: 1 7/8
18/3 + 15/8 is 63/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 8 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 3 × 8 = 24,
18/3 = 18 × 8/3 × 8 = 144/24 - Likewise, for the 2nd fraction, since 8 × 3 = 24,
15/8 = 15 × 3/8 × 3 = 45/24 - Add the two like fractions:
144/24 + 45/24 = 144 + 45/24 = 189/24 - 189/24 simplified gives 63/8
- So, 18/3 + 15/8 = 63/8
In mixed form: 77/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/3+15/8 18/3+30/8 18/6+15/8 18/3+15/16 54/3+15/8 18/3+45/8 18/9+15/8 18/3+15/24 90/3+15/8 18/3+75/8 18/15+15/8 18/3+15/40 18/21+15/8 18/3+15/56