Add 4/15 and 3/8
4/15 + 3/8 is 77/120.
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,
4/15 = 4 × 8/15 × 8 = 32/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
3/8 = 3 × 15/8 × 15 = 45/120 - Add the two like fractions:
32/120 + 45/120 = 32 + 45/120 = 77/120 - So, 4/15 + 3/8 = 77/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/15+3/8 4/15+6/8 4/30+3/8 4/15+3/16 12/15+3/8 4/15+9/8 4/45+3/8 4/15+3/24 20/15+3/8 4/15+15/8 4/75+3/8 4/15+3/40 28/15+3/8 4/15+21/8 4/15+3/56