Add 63/12 and 27/54, Solve 5 3/12 + 27/54 as a fraction

Add 63/12 and 27/54

1^st number: 5 3/12, 2^nd number: 27/54

63/12 + 27/54 is 23/4.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 54 is 108

Next, find the equivalent fraction of both fractional numbers with denominator 108
For the 1st fraction, since 12 × 9 = 108,
63/12 = 63 × 9/12 × 9 = 567/108
Likewise, for the 2nd fraction, since 54 × 2 = 108,
27/54 = 27 × 2/54 × 2 = 54/108
Add the two like fractions:
567/108 + 54/108 = 567 + 54/108 = 621/108
621/108 simplified gives 23/4
So, 63/12 + 27/54 = 23/4
In mixed form: 53/4

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad