Add 18/5 and 35/27, Solve 3 3/5 + 1 8/27 as a fraction

Add 18/5 and 35/27

1^st number: 3 3/5, 2^nd number: 1 8/27

18/5 + 35/27 is 661/135.

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,
18/5 = 18 × 27/5 × 27 = 486/135
Likewise, for the 2nd fraction, since 27 × 5 = 135,
35/27 = 35 × 5/27 × 5 = 175/135
Add the two like fractions:
486/135 + 175/135 = 486 + 175/135 = 661/135
So, 18/5 + 35/27 = 661/135
In mixed form: 4121/135

MathStep (Works offline)

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