Add 42/9 and 80/7, Solve 4 6/9 + 11 3/7 as a fraction

Add 42/9 and 80/7

1^st number: 4 6/9, 2^nd number: 11 3/7

42/9 + 80/7 is 338/21.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 7 is 63

Next, find the equivalent fraction of both fractional numbers with denominator 63
For the 1st fraction, since 9 × 7 = 63,
42/9 = 42 × 7/9 × 7 = 294/63
Likewise, for the 2nd fraction, since 7 × 9 = 63,
80/7 = 80 × 9/7 × 9 = 720/63
Add the two like fractions:
294/63 + 720/63 = 294 + 720/63 = 1014/63
1014/63 simplified gives 338/21
So, 42/9 + 80/7 = 338/21
In mixed form: 162/21

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