Add 12/15 and 4/5
12/15 + 4/5 is 8/5.
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,
4/5 = 4 × 3/5 × 3 = 12/15 - Add the two like fractions:
12/15 + 12/15 = 12 + 12/15 = 24/15 - 24/15 simplified gives 8/5
- So, 12/15 + 4/5 = 8/5
In mixed form: 13/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15+4/5 12/15+8/5 12/30+4/5 12/15+4/10 36/15+4/5 12/15+12/5 12/45+4/5 12/15+4/15 60/15+4/5 12/15+20/5 12/75+4/5 12/15+4/25 84/15+4/5 12/15+28/5 12/15+4/35