Add 3/14 and 81/21, Solve 3/14 + 3 18/21 as a fraction

Add 3/14 and 81/21

1^st number: 3/14, 2^nd number: 3 18/21

3/14 + 81/21 is 57/14.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 14 × 3 = 42,
3/14 = 3 × 3/14 × 3 = 9/42
Likewise, for the 2nd fraction, since 21 × 2 = 42,
81/21 = 81 × 2/21 × 2 = 162/42
Add the two like fractions:
9/42 + 162/42 = 9 + 162/42 = 171/42
171/42 simplified gives 57/14
So, 3/14 + 81/21 = 57/14
In mixed form: 41/14

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