Add 84/12 and 1/81
1st number: 7 0/12, 2nd number: 1/81
84/12 + 1/81 is 568/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 12 × 27 = 324,
84/12 = 84 × 27/12 × 27 = 2268/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
1/81 = 1 × 4/81 × 4 = 4/324 - Add the two like fractions:
2268/324 + 4/324 = 2268 + 4/324 = 2272/324 - 2272/324 simplified gives 568/81
- So, 84/12 + 1/81 = 568/81
In mixed form: 71/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12+2/81 84/24+1/81 84/12+3/81 84/36+1/81 84/12+5/81 84/60+1/81 84/12+7/81