Add 27/9 and 21/42, Solve 3 0/9 + 21/42 as a fraction

Add 27/9 and 21/42

1^st number: 3 0/9, 2^nd number: 21/42

27/9 + 21/42 is 7/2.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 42 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 9 × 14 = 126,
27/9 = 27 × 14/9 × 14 = 378/126
Likewise, for the 2nd fraction, since 42 × 3 = 126,
21/42 = 21 × 3/42 × 3 = 63/126
Add the two like fractions:
378/126 + 63/126 = 378 + 63/126 = 441/126
441/126 simplified gives 7/2
So, 27/9 + 21/42 = 7/2
In mixed form: 31/2

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