Add 40/9 and 81/12
1st number: 4 4/9, 2nd number: 6 9/12
40/9 + 81/12 is 403/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
40/9 = 40 × 4/9 × 4 = 160/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
81/12 = 81 × 3/12 × 3 = 243/36 - Add the two like fractions:
160/36 + 243/36 = 160 + 243/36 = 403/36 - So, 40/9 + 81/12 = 403/36
In mixed form: 117/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/9+81/12 40/18+81/12 40/9+81/24 40/27+81/12 40/9+81/36 40/45+81/12 40/9+81/60 40/63+81/12 40/9+81/84