Add 9/15 and 28/45
9/15 + 28/45 is 11/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
9/15 = 9 × 3/15 × 3 = 27/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
28/45 = 28 × 1/45 × 1 = 28/45 - Add the two like fractions:
27/45 + 28/45 = 27 + 28/45 = 55/45 - 55/45 simplified gives 11/9
- So, 9/15 + 28/45 = 11/9
In mixed form: 12/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/15+28/45 9/15+56/45 9/30+28/45 9/15+28/90 27/15+28/45 9/15+84/45 9/45+28/45 45/15+28/45 9/75+28/45 63/15+28/45