Add 9/15 and 5/8
9/15 + 5/8 is 49/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
9/15 = 9 × 8/15 × 8 = 72/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
5/8 = 5 × 15/8 × 15 = 75/120 - Add the two like fractions:
72/120 + 75/120 = 72 + 75/120 = 147/120 - 147/120 simplified gives 49/40
- So, 9/15 + 5/8 = 49/40
In mixed form: 19/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/15+5/8 9/15+10/8 9/30+5/8 9/15+5/16 27/15+5/8 9/15+15/8 9/45+5/8 9/15+5/24 45/15+5/8 9/15+25/8 9/75+5/8 9/15+5/40 63/15+5/8 9/15+35/8 9/15+5/56