Add 36/27 and 81/42, Solve 1 9/27 + 1 39/42 as a fraction

Add 36/27 and 81/42

1^st number: 1 9/27, 2^nd number: 1 39/42

36/27 + 81/42 is 137/42.

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,
36/27 = 36 × 14/27 × 14 = 504/378
Likewise, for the 2nd fraction, since 42 × 9 = 378,
81/42 = 81 × 9/42 × 9 = 729/378
Add the two like fractions:
504/378 + 729/378 = 504 + 729/378 = 1233/378
1233/378 simplified gives 137/42
So, 36/27 + 81/42 = 137/42
In mixed form: 311/42

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