Add 36/80 and 35/9, Solve 36/80 + 3 8/9 as a fraction

Add 36/80 and 35/9

1^st number: 36/80, 2^nd number: 3 8/9

36/80 + 35/9 is 781/180.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 9 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 80 × 9 = 720,
36/80 = 36 × 9/80 × 9 = 324/720
Likewise, for the 2nd fraction, since 9 × 80 = 720,
35/9 = 35 × 80/9 × 80 = 2800/720
Add the two like fractions:
324/720 + 2800/720 = 324 + 2800/720 = 3124/720
3124/720 simplified gives 781/180
So, 36/80 + 35/9 = 781/180
In mixed form: 461/180

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad