Add 12/3 and 18/15
1st number: 4 0/3, 2nd number: 1 3/15
12/3 + 18/15 is 26/5.
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,
18/15 = 18 × 1/15 × 1 = 18/15 - Add the two like fractions:
60/15 + 18/15 = 60 + 18/15 = 78/15 - 78/15 simplified gives 26/5
- So, 12/3 + 18/15 = 26/5
In mixed form: 51/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/3+18/15 12/3+36/15 12/6+18/15 12/3+18/30 36/3+18/15 12/3+54/15 12/9+18/15 12/3+18/45 60/3+18/15 12/3+90/15 12/15+18/15 12/3+18/75 84/3+18/15 12/21+18/15