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

Add 28/8 and 21/9

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

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

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

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

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