Add 36/21 and 27/42, Solve 1 15/21 + 27/42 as a fraction

Add 36/21 and 27/42

1^st number: 1 15/21, 2^nd number: 27/42

36/21 + 27/42 is 33/14.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 42 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 21 × 2 = 42,
36/21 = 36 × 2/21 × 2 = 72/42
Likewise, for the 2nd fraction, since 42 × 1 = 42,
27/42 = 27 × 1/42 × 1 = 27/42
Add the two like fractions:
72/42 + 27/42 = 72 + 27/42 = 99/42
99/42 simplified gives 33/14
So, 36/21 + 27/42 = 33/14
In mixed form: 25/14

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