Add 9/15 and 8/9
9/15 + 8/9 is 67/45.
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,
9/15 = 9 × 3/15 × 3 = 27/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
8/9 = 8 × 5/9 × 5 = 40/45 - Add the two like fractions:
27/45 + 40/45 = 27 + 40/45 = 67/45 - So, 9/15 + 8/9 = 67/45
In mixed form: 122/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/15+8/9 9/15+16/9 9/30+8/9 9/15+8/18 27/15+8/9 9/15+24/9 9/45+8/9 9/15+8/27 45/15+8/9 9/15+40/9 9/75+8/9 9/15+8/45 63/15+8/9 9/15+56/9 9/15+8/63