Add 8/15 and 15/40
8/15 + 15/40 is 109/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
8/15 = 8 × 8/15 × 8 = 64/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
15/40 = 15 × 3/40 × 3 = 45/120 - Add the two like fractions:
64/120 + 45/120 = 64 + 45/120 = 109/120 - So, 8/15 + 15/40 = 109/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/15+15/40 8/15+30/40 8/30+15/40 8/15+15/80 24/15+15/40 8/15+45/40 8/45+15/40 40/15+15/40 8/15+75/40 8/75+15/40 56/15+15/40