Add 12/15 and 28/18
1st number: 12/15, 2nd number: 1 10/18
12/15 + 28/18 is 106/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
12/15 = 12 × 6/15 × 6 = 72/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
28/18 = 28 × 5/18 × 5 = 140/90 - Add the two like fractions:
72/90 + 140/90 = 72 + 140/90 = 212/90 - 212/90 simplified gives 106/45
- So, 12/15 + 28/18 = 106/45
In mixed form: 216/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15+28/18 12/15+56/18 12/30+28/18 12/15+28/36 36/15+28/18 12/15+84/18 12/45+28/18 12/15+28/54 60/15+28/18 12/75+28/18 12/15+28/90 84/15+28/18