Add 45/18 and 15/81
1st number: 2 9/18, 2nd number: 15/81
45/18 + 15/81 is 145/54.
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,
45/18 = 45 × 9/18 × 9 = 405/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
15/81 = 15 × 2/81 × 2 = 30/162 - Add the two like fractions:
405/162 + 30/162 = 405 + 30/162 = 435/162 - 435/162 simplified gives 145/54
- So, 45/18 + 15/81 = 145/54
In mixed form: 237/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/18+15/81 45/18+30/81 45/36+15/81 45/18+45/81 45/54+15/81 45/18+75/81 45/90+15/81