Add 8/63 and 21/12, Solve 8/63 + 1 9/12 as a fraction

Add 8/63 and 21/12

1^st number: 8/63, 2^nd number: 1 9/12

8/63 + 21/12 is 473/252.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 12 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 63 × 4 = 252,
8/63 = 8 × 4/63 × 4 = 32/252
Likewise, for the 2nd fraction, since 12 × 21 = 252,
21/12 = 21 × 21/12 × 21 = 441/252
Add the two like fractions:
32/252 + 441/252 = 32 + 441/252 = 473/252
So, 8/63 + 21/12 = 473/252
In mixed form: 1221/252

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