Add 15/12 and 40/18
1st number: 1 3/12, 2nd number: 2 4/18
15/12 + 40/18 is 125/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
15/12 = 15 × 3/12 × 3 = 45/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
40/18 = 40 × 2/18 × 2 = 80/36 - Add the two like fractions:
45/36 + 80/36 = 45 + 80/36 = 125/36 - So, 15/12 + 40/18 = 125/36
In mixed form: 317/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12+40/18 15/12+80/18 15/24+40/18 15/12+40/36 45/12+40/18 15/36+40/18 15/12+40/54 75/12+40/18 15/60+40/18 15/12+40/90 15/84+40/18