Add 28/4 and 9/81
1st number: 7 0/4, 2nd number: 9/81
28/4 + 9/81 is 64/9.
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,
28/4 = 28 × 81/4 × 81 = 2268/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
9/81 = 9 × 4/81 × 4 = 36/324 - Add the two like fractions:
2268/324 + 36/324 = 2268 + 36/324 = 2304/324 - 2304/324 simplified gives 64/9
- So, 28/4 + 9/81 = 64/9
In mixed form: 71/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/4+9/81 28/4+18/81 28/8+9/81 84/4+9/81 28/4+27/81 28/12+9/81 28/4+45/81 28/20+9/81 28/4+63/81