Add 27/12 and 84/9, Solve 2 3/12 + 9 3/9 as a fraction

Add 27/12 and 84/9

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

27/12 + 84/9 is 139/12.

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

Next, find the equivalent fraction of both fractional numbers with denominator 36
For the 1st fraction, since 12 × 3 = 36,
27/12 = 27 × 3/12 × 3 = 81/36
Likewise, for the 2nd fraction, since 9 × 4 = 36,
84/9 = 84 × 4/9 × 4 = 336/36
Add the two like fractions:
81/36 + 336/36 = 81 + 336/36 = 417/36
417/36 simplified gives 139/12
So, 27/12 + 84/9 = 139/12
In mixed form: 117/12

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