Add 42/12 and 24/27, Solve 3 6/12 + 24/27 as a fraction

Add 42/12 and 24/27

1^st number: 3 6/12, 2^nd number: 24/27

42/12 + 24/27 is 79/18.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 27 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 27 × 4 = 108,
24/27 = 24 × 4/27 × 4 = 96/108
Add the two like fractions:
378/108 + 96/108 = 378 + 96/108 = 474/108
474/108 simplified gives 79/18
So, 42/12 + 24/27 = 79/18
In mixed form: 47/18

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