Add 21/4 and 27/63, Solve 5 1/4 + 27/63 as a fraction

Add 21/4 and 27/63

1^st number: 5 1/4, 2^nd number: 27/63

21/4 + 27/63 is 159/28.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 63 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 4 × 63 = 252,
21/4 = 21 × 63/4 × 63 = 1323/252
Likewise, for the 2nd fraction, since 63 × 4 = 252,
27/63 = 27 × 4/63 × 4 = 108/252
Add the two like fractions:
1323/252 + 108/252 = 1323 + 108/252 = 1431/252
1431/252 simplified gives 159/28
So, 21/4 + 27/63 = 159/28
In mixed form: 519/28

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