Add 15/45 and 84/81
1st number: 15/45, 2nd number: 1 3/81
15/45 + 84/81 is 37/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 45 × 9 = 405,
15/45 = 15 × 9/45 × 9 = 135/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
84/81 = 84 × 5/81 × 5 = 420/405 - Add the two like fractions:
135/405 + 420/405 = 135 + 420/405 = 555/405 - 555/405 simplified gives 37/27
- So, 15/45 + 84/81 = 37/27
In mixed form: 110/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/45+84/81 15/90+84/81 75/45+84/81