Add 81/42 and 9/16, Solve 1 39/42 + 9/16 as a fraction

Add 81/42 and 9/16

1^st number: 1 39/42, 2^nd number: 9/16

81/42 + 9/16 is 279/112.

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,
9/16 = 9 × 21/16 × 21 = 189/336
Add the two like fractions:
648/336 + 189/336 = 648 + 189/336 = 837/336
837/336 simplified gives 279/112
So, 81/42 + 9/16 = 279/112
In mixed form: 255/112

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