Add 81/42 and 14/8, Solve 1 39/42 + 1 6/8 as a fraction

Add 81/42 and 14/8

1^st number: 1 39/42, 2^nd number: 1 6/8

81/42 + 14/8 is 103/28.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 8 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 42 × 4 = 168,
81/42 = 81 × 4/42 × 4 = 324/168
Likewise, for the 2nd fraction, since 8 × 21 = 168,
14/8 = 14 × 21/8 × 21 = 294/168
Add the two like fractions:
324/168 + 294/168 = 324 + 294/168 = 618/168
618/168 simplified gives 103/28
So, 81/42 + 14/8 = 103/28
In mixed form: 319/28

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