Add 4/81 and 25/12
1st number: 4/81, 2nd number: 2 1/12
4/81 + 25/12 is 691/324.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 12 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
4/81 = 4 × 4/81 × 4 = 16/324 - Likewise, for the 2nd fraction, since 12 × 27 = 324,
25/12 = 25 × 27/12 × 27 = 675/324 - Add the two like fractions:
16/324 + 675/324 = 16 + 675/324 = 691/324 - So, 4/81 + 25/12 = 691/324
In mixed form: 243/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/81+25/12 4/81+50/12 4/81+25/24 12/81+25/12 4/81+75/12 4/81+25/36 20/81+25/12 4/81+25/60 28/81+25/12 4/81+25/84