Add 6/18 and 40/81
6/18 + 40/81 is 67/81.
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,
6/18 = 6 × 9/18 × 9 = 54/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
40/81 = 40 × 2/81 × 2 = 80/162 - Add the two like fractions:
54/162 + 80/162 = 54 + 80/162 = 134/162 - 134/162 simplified gives 67/81
- So, 6/18 + 40/81 = 67/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/18+40/81 6/18+80/81 6/36+40/81 6/54+40/81 30/18+40/81 6/90+40/81 42/18+40/81