Add 5/8 and 9/15
5/8 + 9/15 is 49/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
5/8 = 5 × 15/8 × 15 = 75/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
9/15 = 9 × 8/15 × 8 = 72/120 - Add the two like fractions:
75/120 + 72/120 = 75 + 72/120 = 147/120 - 147/120 simplified gives 49/40
- So, 5/8 + 9/15 = 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: 10/8+9/15 5/8+18/15 5/16+9/15 5/8+9/30 15/8+9/15 5/8+27/15 5/24+9/15 5/8+9/45 25/8+9/15 5/8+45/15 5/40+9/15 5/8+9/75 35/8+9/15 5/8+63/15 5/56+9/15