Add 12/5 and 28/27, Solve 2 2/5 + 1 1/27 as a fraction

Add 12/5 and 28/27

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

12/5 + 28/27 is 464/135.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 27 is 135

Next, find the equivalent fraction of both fractional numbers with denominator 135
For the 1st fraction, since 5 × 27 = 135,
12/5 = 12 × 27/5 × 27 = 324/135
Likewise, for the 2nd fraction, since 27 × 5 = 135,
28/27 = 28 × 5/27 × 5 = 140/135
Add the two like fractions:
324/135 + 140/135 = 324 + 140/135 = 464/135
So, 12/5 + 28/27 = 464/135
In mixed form: 359/135

MathStep (Works offline)

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