Add 27/8 and 15/81
1st number: 3 3/8, 2nd number: 15/81
27/8 + 15/81 is 769/216.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 81 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 8 × 81 = 648,
27/8 = 27 × 81/8 × 81 = 2187/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
15/81 = 15 × 8/81 × 8 = 120/648 - Add the two like fractions:
2187/648 + 120/648 = 2187 + 120/648 = 2307/648 - 2307/648 simplified gives 769/216
- So, 27/8 + 15/81 = 769/216
In mixed form: 3121/216
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/8+15/81 27/8+30/81 27/16+15/81 81/8+15/81 27/8+45/81 27/24+15/81 27/8+75/81 27/40+15/81 27/56+15/81