Add 28/9 and 84/12, Solve 3 1/9 + 7 0/12 as a fraction

Add 28/9 and 84/12

1^st number: 3 1/9, 2^nd number: 7 0/12

28/9 + 84/12 is 91/9.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 12 is 36

Next, find the equivalent fraction of both fractional numbers with denominator 36
For the 1st fraction, since 9 × 4 = 36,
28/9 = 28 × 4/9 × 4 = 112/36
Likewise, for the 2nd fraction, since 12 × 3 = 36,
84/12 = 84 × 3/12 × 3 = 252/36
Add the two like fractions:
112/36 + 252/36 = 112 + 252/36 = 364/36
364/36 simplified gives 91/9
So, 28/9 + 84/12 = 91/9
In mixed form: 101/9

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