Add 12/27 and 35/15, Solve 12/27 + 2 5/15 as a fraction

Add 12/27 and 35/15

1^st number: 12/27, 2^nd number: 2 5/15

12/27 + 35/15 is 25/9.

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,
12/27 = 12 × 5/27 × 5 = 60/135
Likewise, for the 2nd fraction, since 15 × 9 = 135,
35/15 = 35 × 9/15 × 9 = 315/135
Add the two like fractions:
60/135 + 315/135 = 60 + 315/135 = 375/135
375/135 simplified gives 25/9
So, 12/27 + 35/15 = 25/9
In mixed form: 27/9

MathStep (Works offline)

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