Add 14/4 and 20/21, Solve 3 2/4 + 20/21 as a fraction

Add 14/4 and 20/21

1^st number: 3 2/4, 2^nd number: 20/21

14/4 + 20/21 is 187/42.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 4 × 21 = 84,
14/4 = 14 × 21/4 × 21 = 294/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
20/21 = 20 × 4/21 × 4 = 80/84
Add the two like fractions:
294/84 + 80/84 = 294 + 80/84 = 374/84
374/84 simplified gives 187/42
So, 14/4 + 20/21 = 187/42
In mixed form: 419/42

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