Add 20/12 and 3/63, Solve 1 8/12 + 3/63 as a fraction

Add 20/12 and 3/63

1^st number: 1 8/12, 2^nd number: 3/63

20/12 + 3/63 is 12/7.

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

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 12 × 21 = 252,
20/12 = 20 × 21/12 × 21 = 420/252
Likewise, for the 2nd fraction, since 63 × 4 = 252,
3/63 = 3 × 4/63 × 4 = 12/252
Add the two like fractions:
420/252 + 12/252 = 420 + 12/252 = 432/252
432/252 simplified gives 12/7
So, 20/12 + 3/63 = 12/7
In mixed form: 15/7

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