Add 56/21 and 80/9, Solve 2 14/21 + 8 8/9 as a fraction

Add 56/21 and 80/9

1^st number: 2 14/21, 2^nd number: 8 8/9

56/21 + 80/9 is 104/9.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 9 is 63

Next, find the equivalent fraction of both fractional numbers with denominator 63
For the 1st fraction, since 21 × 3 = 63,
56/21 = 56 × 3/21 × 3 = 168/63
Likewise, for the 2nd fraction, since 9 × 7 = 63,
80/9 = 80 × 7/9 × 7 = 560/63
Add the two like fractions:
168/63 + 560/63 = 168 + 560/63 = 728/63
728/63 simplified gives 104/9
So, 56/21 + 80/9 = 104/9
In mixed form: 115/9

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