Add 30/5 and 20/84, Solve 6 0/5 + 20/84 as a fraction

Add 30/5 and 20/84

1^st number: 6 0/5, 2^nd number: 20/84

30/5 + 20/84 is 131/21.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 84 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 5 × 84 = 420,
30/5 = 30 × 84/5 × 84 = 2520/420
Likewise, for the 2nd fraction, since 84 × 5 = 420,
20/84 = 20 × 5/84 × 5 = 100/420
Add the two like fractions:
2520/420 + 100/420 = 2520 + 100/420 = 2620/420
2620/420 simplified gives 131/21
So, 30/5 + 20/84 = 131/21
In mixed form: 65/21

MathStep (Works offline)

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