Add 8/4 and 21/81
1st number: 2 0/4, 2nd number: 21/81
8/4 + 21/81 is 61/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 4 × 81 = 324,
8/4 = 8 × 81/4 × 81 = 648/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
21/81 = 21 × 4/81 × 4 = 84/324 - Add the two like fractions:
648/324 + 84/324 = 648 + 84/324 = 732/324 - 732/324 simplified gives 61/27
- So, 8/4 + 21/81 = 61/27
In mixed form: 27/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/4+21/81 8/4+42/81 24/4+21/81 8/4+63/81 8/12+21/81 40/4+21/81 8/20+21/81 56/4+21/81 8/28+21/81