Add 27/9 and 21/28, Solve 3 0/9 + 21/28 as a fraction

Add 27/9 and 21/28

1^st number: 3 0/9, 2^nd number: 21/28

27/9 + 21/28 is 15/4.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 28 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 9 × 28 = 252,
27/9 = 27 × 28/9 × 28 = 756/252
Likewise, for the 2nd fraction, since 28 × 9 = 252,
21/28 = 21 × 9/28 × 9 = 189/252
Add the two like fractions:
756/252 + 189/252 = 756 + 189/252 = 945/252
945/252 simplified gives 15/4
So, 27/9 + 21/28 = 15/4
In mixed form: 33/4

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