Add 70/12 and 3/81
1st number: 5 10/12, 2nd number: 3/81
70/12 + 3/81 is 317/54.
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,
70/12 = 70 × 27/12 × 27 = 1890/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
3/81 = 3 × 4/81 × 4 = 12/324 - Add the two like fractions:
1890/324 + 12/324 = 1890 + 12/324 = 1902/324 - 1902/324 simplified gives 317/54
- So, 70/12 + 3/81 = 317/54
In mixed form: 547/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/12+6/81 70/24+3/81 70/12+9/81 70/36+3/81 70/12+15/81 70/60+3/81 70/12+21/81 70/84+3/81