Add 81/12 and 60/63, Solve 6 9/12 + 60/63 as a fraction

Add 81/12 and 60/63

1^st number: 6 9/12, 2^nd number: 60/63

81/12 + 60/63 is 647/84.

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,
81/12 = 81 × 21/12 × 21 = 1701/252
Likewise, for the 2nd fraction, since 63 × 4 = 252,
60/63 = 60 × 4/63 × 4 = 240/252
Add the two like fractions:
1701/252 + 240/252 = 1701 + 240/252 = 1941/252
1941/252 simplified gives 647/84
So, 81/12 + 60/63 = 647/84
In mixed form: 759/84

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