Add 84/81 and 3/12, Solve 1 3/81 + 3/12 as a fraction

Add 84/81 and 3/12

1^st number: 1 3/81, 2^nd number: 3/12

84/81 + 3/12 is 139/108.

Find the least common denominator or LCM of the two denominators:
LCM of 81 and 12 is 324

Next, find the equivalent fraction of both fractional numbers with denominator 324
For the 1st fraction, since 81 × 4 = 324,
84/81 = 84 × 4/81 × 4 = 336/324
Likewise, for the 2nd fraction, since 12 × 27 = 324,
3/12 = 3 × 27/12 × 27 = 81/324
Add the two like fractions:
336/324 + 81/324 = 336 + 81/324 = 417/324
417/324 simplified gives 139/108
So, 84/81 + 3/12 = 139/108
In mixed form: 131/108

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