Add 15/12 and 35/81
1st number: 1 3/12, 2nd number: 35/81
15/12 + 35/81 is 545/324.
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,
15/12 = 15 × 27/12 × 27 = 405/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
35/81 = 35 × 4/81 × 4 = 140/324 - Add the two like fractions:
405/324 + 140/324 = 405 + 140/324 = 545/324 - So, 15/12 + 35/81 = 545/324
In mixed form: 1221/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12+35/81 15/12+70/81 15/24+35/81 45/12+35/81 15/36+35/81 75/12+35/81 15/60+35/81 15/84+35/81