Add 12/15 and 15/5
1st number: 12/15, 2nd number: 3 0/5
12/15 + 15/5 is 19/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 5 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 15 × 1 = 15,
12/15 = 12 × 1/15 × 1 = 12/15 - Likewise, for the 2nd fraction, since 5 × 3 = 15,
15/5 = 15 × 3/5 × 3 = 45/15 - Add the two like fractions:
12/15 + 45/15 = 12 + 45/15 = 57/15 - 57/15 simplified gives 19/5
- So, 12/15 + 15/5 = 19/5
In mixed form: 34/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15+15/5 12/15+30/5 12/30+15/5 12/15+15/10 36/15+15/5 12/15+45/5 12/45+15/5 60/15+15/5 12/15+75/5 12/75+15/5 12/15+15/25 84/15+15/5 12/15+15/35