Add 6/21 and 27/6, Solve 6/21 + 4 3/6 as a fraction

Add 6/21 and 27/6

1^st number: 6/21, 2^nd number: 4 3/6

6/21 + 27/6 is 67/14.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 21 × 2 = 42,
6/21 = 6 × 2/21 × 2 = 12/42
Likewise, for the 2nd fraction, since 6 × 7 = 42,
27/6 = 27 × 7/6 × 7 = 189/42
Add the two like fractions:
12/42 + 189/42 = 12 + 189/42 = 201/42
201/42 simplified gives 67/14
So, 6/21 + 27/6 = 67/14
In mixed form: 411/14

MathStep (Works offline)

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