Add 21/4 and 15/27, Solve 5 1/4 + 15/27 as a fraction

Add 21/4 and 15/27

1^st number: 5 1/4, 2^nd number: 15/27

21/4 + 15/27 is 209/36.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 27 is 108

Next, find the equivalent fraction of both fractional numbers with denominator 108
For the 1st fraction, since 4 × 27 = 108,
21/4 = 21 × 27/4 × 27 = 567/108
Likewise, for the 2nd fraction, since 27 × 4 = 108,
15/27 = 15 × 4/27 × 4 = 60/108
Add the two like fractions:
567/108 + 60/108 = 567 + 60/108 = 627/108
627/108 simplified gives 209/36
So, 21/4 + 15/27 = 209/36
In mixed form: 529/36

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