Add 42/12 and 42/54, Solve 3 6/12 + 42/54 as a fraction

Add 42/12 and 42/54

1^st number: 3 6/12, 2^nd number: 42/54

42/12 + 42/54 is 77/18.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 54 is 108

Next, find the equivalent fraction of both fractional numbers with denominator 108
For the 1st fraction, since 12 × 9 = 108,
42/12 = 42 × 9/12 × 9 = 378/108
Likewise, for the 2nd fraction, since 54 × 2 = 108,
42/54 = 42 × 2/54 × 2 = 84/108
Add the two like fractions:
378/108 + 84/108 = 378 + 84/108 = 462/108
462/108 simplified gives 77/18
So, 42/12 + 42/54 = 77/18
In mixed form: 45/18

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