Add 81/6 and 21/7, Solve 13 3/6 + 3 0/7 as a fraction

Add 81/6 and 21/7

1^st number: 13 3/6, 2^nd number: 3 0/7

81/6 + 21/7 is 33/2.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 7 is 42

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

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