Add 6/16 and 81/42, Solve 6/16 + 1 39/42 as a fraction

Add 6/16 and 81/42

1^st number: 6/16, 2^nd number: 1 39/42

6/16 + 81/42 is 129/56.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 42 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 16 × 21 = 336,
6/16 = 6 × 21/16 × 21 = 126/336
Likewise, for the 2nd fraction, since 42 × 8 = 336,
81/42 = 81 × 8/42 × 8 = 648/336
Add the two like fractions:
126/336 + 648/336 = 126 + 648/336 = 774/336
774/336 simplified gives 129/56
So, 6/16 + 81/42 = 129/56
In mixed form: 217/56

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