Add 18/7 and 30/9, Solve 2 4/7 + 3 3/9 as a fraction

Add 18/7 and 30/9

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

18/7 + 30/9 is 124/21.

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

Next, find the equivalent fraction of both fractional numbers with denominator 63
For the 1st fraction, since 7 × 9 = 63,
18/7 = 18 × 9/7 × 9 = 162/63
Likewise, for the 2nd fraction, since 9 × 7 = 63,
30/9 = 30 × 7/9 × 7 = 210/63
Add the two like fractions:
162/63 + 210/63 = 162 + 210/63 = 372/63
372/63 simplified gives 124/21
So, 18/7 + 30/9 = 124/21
In mixed form: 519/21

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