Add 21/27 and 4/14, Solve 21/27 + 4/14 as a fraction

Add 21/27 and 4/14

21/27 + 4/14 is 67/63.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 14 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 27 × 14 = 378,
21/27 = 21 × 14/27 × 14 = 294/378
Likewise, for the 2nd fraction, since 14 × 27 = 378,
4/14 = 4 × 27/14 × 27 = 108/378
Add the two like fractions:
294/378 + 108/378 = 294 + 108/378 = 402/378
402/378 simplified gives 67/63
So, 21/27 + 4/14 = 67/63
In mixed form: 14/63

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