Add 81/27 and 27/42, Solve 3 0/27 + 27/42 as a fraction

Add 81/27 and 27/42

1^st number: 3 0/27, 2^nd number: 27/42

81/27 + 27/42 is 51/14.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 42 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 27 × 14 = 378,
81/27 = 81 × 14/27 × 14 = 1134/378
Likewise, for the 2nd fraction, since 42 × 9 = 378,
27/42 = 27 × 9/42 × 9 = 243/378
Add the two like fractions:
1134/378 + 243/378 = 1134 + 243/378 = 1377/378
1377/378 simplified gives 51/14
So, 81/27 + 27/42 = 51/14
In mixed form: 39/14

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