Add 30/54 and 84/63, Solve 30/54 + 1 21/63 as a fraction

Add 30/54 and 84/63

1^st number: 30/54, 2^nd number: 1 21/63

30/54 + 84/63 is 17/9.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 63 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 54 × 7 = 378,
30/54 = 30 × 7/54 × 7 = 210/378
Likewise, for the 2nd fraction, since 63 × 6 = 378,
84/63 = 84 × 6/63 × 6 = 504/378
Add the two like fractions:
210/378 + 504/378 = 210 + 504/378 = 714/378
714/378 simplified gives 17/9
So, 30/54 + 84/63 = 17/9
In mixed form: 18/9

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