Add 81/3 and 18/81
1st number: 27 0/3, 2nd number: 18/81
81/3 + 18/81 is 245/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 3 × 27 = 81,
81/3 = 81 × 27/3 × 27 = 2187/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
18/81 = 18 × 1/81 × 1 = 18/81 - Add the two like fractions:
2187/81 + 18/81 = 2187 + 18/81 = 2205/81 - 2205/81 simplified gives 245/9
- So, 81/3 + 18/81 = 245/9
In mixed form: 272/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/3+36/81 81/6+18/81 81/3+54/81 81/9+18/81 81/3+90/81 81/15+18/81 81/21+18/81