Add 9/15 and 8/5
1st number: 9/15, 2nd number: 1 3/5
9/15 + 8/5 is 11/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 5 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 15 × 1 = 15,
9/15 = 9 × 1/15 × 1 = 9/15 - Likewise, for the 2nd fraction, since 5 × 3 = 15,
8/5 = 8 × 3/5 × 3 = 24/15 - Add the two like fractions:
9/15 + 24/15 = 9 + 24/15 = 33/15 - 33/15 simplified gives 11/5
- So, 9/15 + 8/5 = 11/5
In mixed form: 21/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/15+8/5 9/15+16/5 9/30+8/5 9/15+8/10 27/15+8/5 9/15+24/5 9/45+8/5 9/15+8/15 45/15+8/5 9/15+40/5 9/75+8/5 9/15+8/25 63/15+8/5 9/15+56/5 9/15+8/35