Add 10/27 and 80/15, Solve 10/27 + 5 5/15 as a fraction

Add 10/27 and 80/15

1^st number: 10/27, 2^nd number: 5 5/15

10/27 + 80/15 is 154/27.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 15 is 135

Next, find the equivalent fraction of both fractional numbers with denominator 135
For the 1st fraction, since 27 × 5 = 135,
10/27 = 10 × 5/27 × 5 = 50/135
Likewise, for the 2nd fraction, since 15 × 9 = 135,
80/15 = 80 × 9/15 × 9 = 720/135
Add the two like fractions:
50/135 + 720/135 = 50 + 720/135 = 770/135
770/135 simplified gives 154/27
So, 10/27 + 80/15 = 154/27
In mixed form: 519/27

MathStep (Works offline)

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