Add 12/14 and 20/21, Solve 12/14 + 20/21 as a fraction

Add 12/14 and 20/21

12/14 + 20/21 is 38/21.

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,
12/14 = 12 × 3/14 × 3 = 36/42
Likewise, for the 2nd fraction, since 21 × 2 = 42,
20/21 = 20 × 2/21 × 2 = 40/42
Add the two like fractions:
36/42 + 40/42 = 36 + 40/42 = 76/42
76/42 simplified gives 38/21
So, 12/14 + 20/21 = 38/21
In mixed form: 117/21

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