Add 27/63 and 81/42, Solve 27/63 + 1 39/42 as a fraction

Add 27/63 and 81/42

1^st number: 27/63, 2^nd number: 1 39/42

27/63 + 81/42 is 33/14.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 42 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 63 × 2 = 126,
27/63 = 27 × 2/63 × 2 = 54/126
Likewise, for the 2nd fraction, since 42 × 3 = 126,
81/42 = 81 × 3/42 × 3 = 243/126
Add the two like fractions:
54/126 + 243/126 = 54 + 243/126 = 297/126
297/126 simplified gives 33/14
So, 27/63 + 81/42 = 33/14
In mixed form: 25/14

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