Add 21/9 and 28/8, Solve 2 3/9 + 3 4/8 as a fraction

Add 21/9 and 28/8

1^st number: 2 3/9, 2^nd number: 3 4/8

21/9 + 28/8 is 35/6.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 8 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 9 × 8 = 72,
21/9 = 21 × 8/9 × 8 = 168/72
Likewise, for the 2nd fraction, since 8 × 9 = 72,
28/8 = 28 × 9/8 × 9 = 252/72
Add the two like fractions:
168/72 + 252/72 = 168 + 252/72 = 420/72
420/72 simplified gives 35/6
So, 21/9 + 28/8 = 35/6
In mixed form: 55/6

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