Add 15/40 and 16/15
1st number: 15/40, 2nd number: 1 1/15
15/40 + 16/15 is 173/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
15/40 = 15 × 3/40 × 3 = 45/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
16/15 = 16 × 8/15 × 8 = 128/120 - Add the two like fractions:
45/120 + 128/120 = 45 + 128/120 = 173/120 - So, 15/40 + 16/15 = 173/120
In mixed form: 153/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/40+16/15 15/40+32/15 15/80+16/15 15/40+16/30 45/40+16/15 15/40+48/15 15/40+16/45 75/40+16/15 15/40+80/15 15/40+16/75