Add 20/63 and 21/12, Solve 20/63 + 1 9/12 as a fraction

Add 20/63 and 21/12

1^st number: 20/63, 2^nd number: 1 9/12

20/63 + 21/12 is 521/252.

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,
20/63 = 20 × 4/63 × 4 = 80/252
Likewise, for the 2nd fraction, since 12 × 21 = 252,
21/12 = 21 × 21/12 × 21 = 441/252
Add the two like fractions:
80/252 + 441/252 = 80 + 441/252 = 521/252
So, 20/63 + 21/12 = 521/252
In mixed form: 217/252

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