Add 12/3 and 81/15
1st number: 4 0/3, 2nd number: 5 6/15
12/3 + 81/15 is 47/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 15 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 3 × 5 = 15,
12/3 = 12 × 5/3 × 5 = 60/15 - Likewise, for the 2nd fraction, since 15 × 1 = 15,
81/15 = 81 × 1/15 × 1 = 81/15 - Add the two like fractions:
60/15 + 81/15 = 60 + 81/15 = 141/15 - 141/15 simplified gives 47/5
- So, 12/3 + 81/15 = 47/5
In mixed form: 92/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/3+81/15 12/6+81/15 12/3+81/30 36/3+81/15 12/9+81/15 12/3+81/45 60/3+81/15 12/15+81/15 12/3+81/75 84/3+81/15 12/21+81/15