Add 28/15 and 18/9
1st number: 1 13/15, 2nd number: 2 0/9
28/15 + 18/9 is 58/15.
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,
28/15 = 28 × 3/15 × 3 = 84/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
18/9 = 18 × 5/9 × 5 = 90/45 - Add the two like fractions:
84/45 + 90/45 = 84 + 90/45 = 174/45 - 174/45 simplified gives 58/15
- So, 28/15 + 18/9 = 58/15
In mixed form: 313/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15+18/9 28/15+36/9 28/30+18/9 84/15+18/9 28/15+54/9 28/45+18/9 28/15+18/27 28/15+90/9 28/75+18/9 28/15+18/45 28/15+18/63