Add 49/15 and 9/80, Solve 3 4/15 + 9/80 as a fraction

Add 49/15 and 9/80

1^st number: 3 4/15, 2^nd number: 9/80

49/15 + 9/80 is 811/240.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 80 is 240

Next, find the equivalent fraction of both fractional numbers with denominator 240
For the 1st fraction, since 15 × 16 = 240,
49/15 = 49 × 16/15 × 16 = 784/240
Likewise, for the 2nd fraction, since 80 × 3 = 240,
9/80 = 9 × 3/80 × 3 = 27/240
Add the two like fractions:
784/240 + 27/240 = 784 + 27/240 = 811/240
So, 49/15 + 9/80 = 811/240
In mixed form: 391/240

MathStep (Works offline)

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