Add 81/9 and 81/12
1st number: 9 0/9, 2nd number: 6 9/12
81/9 + 81/12 is 63/4.
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,
81/9 = 81 × 4/9 × 4 = 324/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
81/12 = 81 × 3/12 × 3 = 243/36 - Add the two like fractions:
324/36 + 243/36 = 324 + 243/36 = 567/36 - 567/36 simplified gives 63/4
- So, 81/9 + 81/12 = 63/4
In mixed form: 153/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/18+81/12 81/9+81/24 81/27+81/12 81/9+81/36 81/45+81/12 81/9+81/60 81/63+81/12 81/9+81/84