Add 49/81 and 28/80
49/81 + 28/80 is 1547/1620.
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,
49/81 = 49 × 80/81 × 80 = 3920/6480 - Likewise, for the 2nd fraction, since 80 × 81 = 6480,
28/80 = 28 × 81/80 × 81 = 2268/6480 - Add the two like fractions:
3920/6480 + 2268/6480 = 3920 + 2268/6480 = 6188/6480 - 6188/6480 simplified gives 1547/1620
- So, 49/81 + 28/80 = 1547/1620
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/81+28/80 49/81+56/80 49/81+84/80