Add 84/42 and 30/21, Solve 2 0/42 + 1 9/21 as a fraction

Add 84/42 and 30/21

1^st number: 2 0/42, 2^nd number: 1 9/21

84/42 + 30/21 is 24/7.

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

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 42 × 1 = 42,
84/42 = 84 × 1/42 × 1 = 84/42
Likewise, for the 2nd fraction, since 21 × 2 = 42,
30/21 = 30 × 2/21 × 2 = 60/42
Add the two like fractions:
84/42 + 60/42 = 84 + 60/42 = 144/42
144/42 simplified gives 24/7
So, 84/42 + 30/21 = 24/7
In mixed form: 33/7

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