Add 35/81 and 5/8
35/81 + 5/8 is 685/648.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 8 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 81 × 8 = 648,
35/81 = 35 × 8/81 × 8 = 280/648 - Likewise, for the 2nd fraction, since 8 × 81 = 648,
5/8 = 5 × 81/8 × 81 = 405/648 - Add the two like fractions:
280/648 + 405/648 = 280 + 405/648 = 685/648 - So, 35/81 + 5/8 = 685/648
In mixed form: 137/648
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/81+5/8 35/81+10/8 35/81+5/16 35/81+15/8 35/81+5/24 35/81+25/8 35/81+5/40 35/81+35/8 35/81+5/56