Add 84/9 and 81/12
1st number: 9 3/9, 2nd number: 6 9/12
84/9 + 81/12 is 193/12.
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,
84/9 = 84 × 4/9 × 4 = 336/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
81/12 = 81 × 3/12 × 3 = 243/36 - Add the two like fractions:
336/36 + 243/36 = 336 + 243/36 = 579/36 - 579/36 simplified gives 193/12
- So, 84/9 + 81/12 = 193/12
In mixed form: 161/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+81/12 84/9+81/24 84/27+81/12 84/9+81/36 84/45+81/12 84/9+81/60 84/63+81/12 84/9+81/84