Add 63/21 and 81/6, Solve 3 0/21 + 13 3/6 as a fraction

Add 63/21 and 81/6

1^st number: 3 0/21, 2^nd number: 13 3/6

63/21 + 81/6 is 33/2.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 21 × 2 = 42,
63/21 = 63 × 2/21 × 2 = 126/42
Likewise, for the 2nd fraction, since 6 × 7 = 42,
81/6 = 81 × 7/6 × 7 = 567/42
Add the two like fractions:
126/42 + 567/42 = 126 + 567/42 = 693/42
693/42 simplified gives 33/2
So, 63/21 + 81/6 = 33/2
In mixed form: 161/2

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