Add 28/18 and 4/81
1st number: 1 10/18, 2nd number: 4/81
28/18 + 4/81 is 130/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 18 × 9 = 162,
28/18 = 28 × 9/18 × 9 = 252/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
4/81 = 4 × 2/81 × 2 = 8/162 - Add the two like fractions:
252/162 + 8/162 = 252 + 8/162 = 260/162 - 260/162 simplified gives 130/81
- So, 28/18 + 4/81 = 130/81
In mixed form: 149/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/18+4/81 28/18+8/81 28/36+4/81 84/18+4/81 28/18+12/81 28/54+4/81 28/18+20/81 28/90+4/81 28/18+28/81