Add 10/21 and 12/6, Solve 10/21 + 2 0/6 as a fraction

Add 10/21 and 12/6

1^st number: 10/21, 2^nd number: 2 0/6

10/21 + 12/6 is 52/21.

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,
10/21 = 10 × 2/21 × 2 = 20/42
Likewise, for the 2nd fraction, since 6 × 7 = 42,
12/6 = 12 × 7/6 × 7 = 84/42
Add the two like fractions:
20/42 + 84/42 = 20 + 84/42 = 104/42
104/42 simplified gives 52/21
So, 10/21 + 12/6 = 52/21
In mixed form: 210/21

MathStep (Works offline)

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