Add 81/42 and 70/16, Solve 1 39/42 + 4 6/16 as a fraction

Add 81/42 and 70/16

1^st number: 1 39/42, 2^nd number: 4 6/16

81/42 + 70/16 is 353/56.

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

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 42 × 8 = 336,
81/42 = 81 × 8/42 × 8 = 648/336
Likewise, for the 2nd fraction, since 16 × 21 = 336,
70/16 = 70 × 21/16 × 21 = 1470/336
Add the two like fractions:
648/336 + 1470/336 = 648 + 1470/336 = 2118/336
2118/336 simplified gives 353/56
So, 81/42 + 70/16 = 353/56
In mixed form: 617/56

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