Add 84/21 and 12/14, Solve 4 0/21 + 12/14 as a fraction

Add 84/21 and 12/14

1^st number: 4 0/21, 2^nd number: 12/14

84/21 + 12/14 is 34/7.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 14 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 21 × 2 = 42,
84/21 = 84 × 2/21 × 2 = 168/42
Likewise, for the 2nd fraction, since 14 × 3 = 42,
12/14 = 12 × 3/14 × 3 = 36/42
Add the two like fractions:
168/42 + 36/42 = 168 + 36/42 = 204/42
204/42 simplified gives 34/7
So, 84/21 + 12/14 = 34/7
In mixed form: 46/7

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