Add 8/81 and 15/80
8/81 + 15/80 is 371/1296.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 80 is 6480
Next, find the equivalent fraction of both fractional numbers with denominator 6480 - For the 1st fraction, since 81 × 80 = 6480,
8/81 = 8 × 80/81 × 80 = 640/6480 - Likewise, for the 2nd fraction, since 80 × 81 = 6480,
15/80 = 15 × 81/80 × 81 = 1215/6480 - Add the two like fractions:
640/6480 + 1215/6480 = 640 + 1215/6480 = 1855/6480 - 1855/6480 simplified gives 371/1296
- So, 8/81 + 15/80 = 371/1296
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/81+15/80 8/81+30/80 24/81+15/80 8/81+45/80 40/81+15/80 8/81+75/80 56/81+15/80