Add 15/12 and 12/81
1st number: 1 3/12, 2nd number: 12/81
15/12 + 12/81 is 151/108.
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,
12/81 = 12 × 4/81 × 4 = 48/324 - Add the two like fractions:
405/324 + 48/324 = 405 + 48/324 = 453/324 - 453/324 simplified gives 151/108
- So, 15/12 + 12/81 = 151/108
In mixed form: 143/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12+12/81 15/12+24/81 15/24+12/81 45/12+12/81 15/12+36/81 15/36+12/81 75/12+12/81 15/12+60/81 15/60+12/81 15/12+84/81 15/84+12/81