Add 10/12 and 30/81
10/12 + 30/81 is 65/54.
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,
10/12 = 10 × 27/12 × 27 = 270/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
30/81 = 30 × 4/81 × 4 = 120/324 - Add the two like fractions:
270/324 + 120/324 = 270 + 120/324 = 390/324 - 390/324 simplified gives 65/54
- So, 10/12 + 30/81 = 65/54
In mixed form: 111/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/12+30/81 10/12+60/81 10/24+30/81 30/12+30/81 10/12+90/81 10/36+30/81 50/12+30/81 10/60+30/81 70/12+30/81 10/84+30/81