Add 21/3 and 27/12, Solve 7 0/3 + 2 3/12 as a fraction

Add 21/3 and 27/12

1^st number: 7 0/3, 2^nd number: 2 3/12

21/3 + 27/12 is 37/4.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 12 is 12

Next, find the equivalent fraction of both fractional numbers with denominator 12
For the 1st fraction, since 3 × 4 = 12,
21/3 = 21 × 4/3 × 4 = 84/12
Likewise, for the 2nd fraction, since 12 × 1 = 12,
27/12 = 27 × 1/12 × 1 = 27/12
Add the two like fractions:
84/12 + 27/12 = 84 + 27/12 = 111/12
111/12 simplified gives 37/4
So, 21/3 + 27/12 = 37/4
In mixed form: 91/4

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