Add 90/3 and 15/81
1st number: 30 0/3, 2nd number: 15/81
90/3 + 15/81 is 815/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 3 × 27 = 81,
90/3 = 90 × 27/3 × 27 = 2430/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
15/81 = 15 × 1/81 × 1 = 15/81 - Add the two like fractions:
2430/81 + 15/81 = 2430 + 15/81 = 2445/81 - 2445/81 simplified gives 815/27
- So, 90/3 + 15/81 = 815/27
In mixed form: 305/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/3+30/81 90/6+15/81 90/3+45/81 90/9+15/81 90/3+75/81 90/15+15/81 90/21+15/81