Add 8/2 and 8/21, Solve 4 0/2 + 8/21 as a fraction

Add 8/2 and 8/21

1^st number: 4 0/2, 2^nd number: 8/21

8/2 + 8/21 is 92/21.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 2 × 21 = 42,
8/2 = 8 × 21/2 × 21 = 168/42
Likewise, for the 2nd fraction, since 21 × 2 = 42,
8/21 = 8 × 2/21 × 2 = 16/42
Add the two like fractions:
168/42 + 16/42 = 168 + 16/42 = 184/42
184/42 simplified gives 92/21
So, 8/2 + 8/21 = 92/21
In mixed form: 48/21

MathStep (Works offline)

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