Add 8/5 and 28/54, Solve 1 3/5 + 28/54 as a fraction

Add 8/5 and 28/54

1^st number: 1 3/5, 2^nd number: 28/54

8/5 + 28/54 is 286/135.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 54 is 270

Next, find the equivalent fraction of both fractional numbers with denominator 270
For the 1st fraction, since 5 × 54 = 270,
8/5 = 8 × 54/5 × 54 = 432/270
Likewise, for the 2nd fraction, since 54 × 5 = 270,
28/54 = 28 × 5/54 × 5 = 140/270
Add the two like fractions:
432/270 + 140/270 = 432 + 140/270 = 572/270
572/270 simplified gives 286/135
So, 8/5 + 28/54 = 286/135
In mixed form: 216/135

MathStep (Works offline)

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