Add 81/12 and 6/18
1st number: 6 9/12, 2nd number: 6/18
81/12 + 6/18 is 85/12.
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,
81/12 = 81 × 3/12 × 3 = 243/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
6/18 = 6 × 2/18 × 2 = 12/36 - Add the two like fractions:
243/36 + 12/36 = 243 + 12/36 = 255/36 - 255/36 simplified gives 85/12
- So, 81/12 + 6/18 = 85/12
In mixed form: 71/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/12+12/18 81/24+6/18 81/12+6/36 81/36+6/18 81/12+6/54 81/12+30/18 81/60+6/18 81/12+6/90 81/12+42/18 81/84+6/18