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

Add 7/21 and 81/6

1^st number: 7/21, 2^nd number: 13 3/6

7/21 + 81/6 is 83/6.

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,
7/21 = 7 × 2/21 × 2 = 14/42
Likewise, for the 2nd fraction, since 6 × 7 = 42,
81/6 = 81 × 7/6 × 7 = 567/42
Add the two like fractions:
14/42 + 567/42 = 14 + 567/42 = 581/42
581/42 simplified gives 83/6
So, 7/21 + 81/6 = 83/6
In mixed form: 135/6

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