Add 30/9 and 42/7, Solve 3 3/9 + 6 0/7 as a fraction

Add 30/9 and 42/7

1^st number: 3 3/9, 2^nd number: 6 0/7

30/9 + 42/7 is 28/3.

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,
30/9 = 30 × 7/9 × 7 = 210/63
Likewise, for the 2nd fraction, since 7 × 9 = 63,
42/7 = 42 × 9/7 × 9 = 378/63
Add the two like fractions:
210/63 + 378/63 = 210 + 378/63 = 588/63
588/63 simplified gives 28/3
So, 30/9 + 42/7 = 28/3
In mixed form: 91/3

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