Add 15/81 and 6/4
1st number: 15/81, 2nd number: 1 2/4
15/81 + 6/4 is 91/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 4 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
15/81 = 15 × 4/81 × 4 = 60/324 - Likewise, for the 2nd fraction, since 4 × 81 = 324,
6/4 = 6 × 81/4 × 81 = 486/324 - Add the two like fractions:
60/324 + 486/324 = 60 + 486/324 = 546/324 - 546/324 simplified gives 91/54
- So, 15/81 + 6/4 = 91/54
In mixed form: 137/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/81+6/4 15/81+12/4 15/81+6/8 45/81+6/4 15/81+18/4 15/81+6/12 75/81+6/4 15/81+30/4 15/81+6/20 15/81+42/4 15/81+6/28