Add 84/42 and 27/81, Solve 2 0/42 + 27/81 as a fraction

Add 84/42 and 27/81

1^st number: 2 0/42, 2^nd number: 27/81

84/42 + 27/81 is 7/3.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 81 is 1134

Next, find the equivalent fraction of both fractional numbers with denominator 1134
For the 1st fraction, since 42 × 27 = 1134,
84/42 = 84 × 27/42 × 27 = 2268/1134
Likewise, for the 2nd fraction, since 81 × 14 = 1134,
27/81 = 27 × 14/81 × 14 = 378/1134
Add the two like fractions:
2268/1134 + 378/1134 = 2268 + 378/1134 = 2646/1134
2646/1134 simplified gives 7/3
So, 84/42 + 27/81 = 7/3
In mixed form: 21/3

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