Add 20/6 and 42/21, Solve 3 2/6 + 2 0/21 as a fraction

Add 20/6 and 42/21

1^st number: 3 2/6, 2^nd number: 2 0/21

20/6 + 42/21 is 16/3.

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

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 6 × 7 = 42,
20/6 = 20 × 7/6 × 7 = 140/42
Likewise, for the 2nd fraction, since 21 × 2 = 42,
42/21 = 42 × 2/21 × 2 = 84/42
Add the two like fractions:
140/42 + 84/42 = 140 + 84/42 = 224/42
224/42 simplified gives 16/3
So, 20/6 + 42/21 = 16/3
In mixed form: 51/3

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