Add 81/6 and 30/7, Solve 13 3/6 + 4 2/7 as a fraction

Add 81/6 and 30/7

1^st number: 13 3/6, 2^nd number: 4 2/7

81/6 + 30/7 is 249/14.

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,
30/7 = 30 × 6/7 × 6 = 180/42
Add the two like fractions:
567/42 + 180/42 = 567 + 180/42 = 747/42
747/42 simplified gives 249/14
So, 81/6 + 30/7 = 249/14
In mixed form: 1711/14

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