Add 81/8 and 15/3
1st number: 10 1/8, 2nd number: 5 0/3
81/8 + 15/3 is 121/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 3 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 8 × 3 = 24,
81/8 = 81 × 3/8 × 3 = 243/24 - Likewise, for the 2nd fraction, since 3 × 8 = 24,
15/3 = 15 × 8/3 × 8 = 120/24 - Add the two like fractions:
243/24 + 120/24 = 243 + 120/24 = 363/24 - 363/24 simplified gives 121/8
- So, 81/8 + 15/3 = 121/8
In mixed form: 151/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/8+30/3 81/16+15/3 81/8+15/6 81/8+45/3 81/24+15/3 81/8+15/9 81/8+75/3 81/40+15/3 81/56+15/3 81/8+15/21