Add 27/15 and 28/9
1st number: 1 12/15, 2nd number: 3 1/9
27/15 + 28/9 is 221/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
27/15 = 27 × 3/15 × 3 = 81/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
28/9 = 28 × 5/9 × 5 = 140/45 - Add the two like fractions:
81/45 + 140/45 = 81 + 140/45 = 221/45 - So, 27/15 + 28/9 = 221/45
In mixed form: 441/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/15+28/9 27/15+56/9 27/30+28/9 27/15+28/18 81/15+28/9 27/15+84/9 27/45+28/9 27/15+28/27 27/75+28/9 27/15+28/45 27/15+28/63