Add 84/12 and 28/8, Solve 7 0/12 + 3 4/8 as a fraction

Add 84/12 and 28/8

1^st number: 7 0/12, 2^nd number: 3 4/8

84/12 + 28/8 is 21/2.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 8 is 24

Next, find the equivalent fraction of both fractional numbers with denominator 24
For the 1st fraction, since 12 × 2 = 24,
84/12 = 84 × 2/12 × 2 = 168/24
Likewise, for the 2nd fraction, since 8 × 3 = 24,
28/8 = 28 × 3/8 × 3 = 84/24
Add the two like fractions:
168/24 + 84/24 = 168 + 84/24 = 252/24
252/24 simplified gives 21/2
So, 84/12 + 28/8 = 21/2
In mixed form: 101/2

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