Add 21/9 and 12/28, Solve 2 3/9 + 12/28 as a fraction

Add 21/9 and 12/28

1^st number: 2 3/9, 2^nd number: 12/28

21/9 + 12/28 is 58/21.

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,
21/9 = 21 × 28/9 × 28 = 588/252
Likewise, for the 2nd fraction, since 28 × 9 = 252,
12/28 = 12 × 9/28 × 9 = 108/252
Add the two like fractions:
588/252 + 108/252 = 588 + 108/252 = 696/252
696/252 simplified gives 58/21
So, 21/9 + 12/28 = 58/21
In mixed form: 216/21

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