Add 4/81 and 5/4
1st number: 4/81, 2nd number: 1 1/4
4/81 + 5/4 is 421/324.
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,
4/81 = 4 × 4/81 × 4 = 16/324 - Likewise, for the 2nd fraction, since 4 × 81 = 324,
5/4 = 5 × 81/4 × 81 = 405/324 - Add the two like fractions:
16/324 + 405/324 = 16 + 405/324 = 421/324 - So, 4/81 + 5/4 = 421/324
In mixed form: 197/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/81+5/4 4/81+10/4 4/81+5/8 12/81+5/4 4/81+15/4 4/81+5/12 20/81+5/4 4/81+25/4 4/81+5/20 28/81+5/4 4/81+35/4 4/81+5/28