Add 63/21 and 27/54, Solve 3 0/21 + 27/54 as a fraction

Add 63/21 and 27/54

1^st number: 3 0/21, 2^nd number: 27/54

63/21 + 27/54 is 7/2.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 21 × 18 = 378,
63/21 = 63 × 18/21 × 18 = 1134/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
27/54 = 27 × 7/54 × 7 = 189/378
Add the two like fractions:
1134/378 + 189/378 = 1134 + 189/378 = 1323/378
1323/378 simplified gives 7/2
So, 63/21 + 27/54 = 7/2
In mixed form: 31/2

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