Add 42/12 and 16/7, Solve 3 6/12 + 2 2/7 as a fraction

Add 42/12 and 16/7

1^st number: 3 6/12, 2^nd number: 2 2/7

42/12 + 16/7 is 81/14.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
42/12 = 42 × 7/12 × 7 = 294/84
Likewise, for the 2nd fraction, since 7 × 12 = 84,
16/7 = 16 × 12/7 × 12 = 192/84
Add the two like fractions:
294/84 + 192/84 = 294 + 192/84 = 486/84
486/84 simplified gives 81/14
So, 42/12 + 16/7 = 81/14
In mixed form: 511/14

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