Add 20/84 and 8/3, Solve 20/84 + 2 2/3 as a fraction

Add 20/84 and 8/3

1^st number: 20/84, 2^nd number: 2 2/3

20/84 + 8/3 is 61/21.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 3 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 84 × 1 = 84,
20/84 = 20 × 1/84 × 1 = 20/84
Likewise, for the 2nd fraction, since 3 × 28 = 84,
8/3 = 8 × 28/3 × 28 = 224/84
Add the two like fractions:
20/84 + 224/84 = 20 + 224/84 = 244/84
244/84 simplified gives 61/21
So, 20/84 + 8/3 = 61/21
In mixed form: 219/21

MathStep (Works offline)

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