Add 15/18 and 3/81
15/18 + 3/81 is 47/54.
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,
15/18 = 15 × 9/18 × 9 = 135/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
3/81 = 3 × 2/81 × 2 = 6/162 - Add the two like fractions:
135/162 + 6/162 = 135 + 6/162 = 141/162 - 141/162 simplified gives 47/54
- So, 15/18 + 3/81 = 47/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18+3/81 15/18+6/81 15/36+3/81 45/18+3/81 15/18+9/81 15/54+3/81 75/18+3/81 15/18+15/81 15/90+3/81 15/18+21/81