Add 7/18 and 28/81
7/18 + 28/81 is 119/162.
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,
7/18 = 7 × 9/18 × 9 = 63/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
28/81 = 28 × 2/81 × 2 = 56/162 - Add the two like fractions:
63/162 + 56/162 = 63 + 56/162 = 119/162 - So, 7/18 + 28/81 = 119/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/18+28/81 7/18+56/81 7/36+28/81 21/18+28/81 7/18+84/81 7/54+28/81 35/18+28/81 7/90+28/81 49/18+28/81