Add 63/3 and 27/15, Solve 21 0/3 + 1 12/15 as a fraction

Add 63/3 and 27/15

1^st number: 21 0/3, 2^nd number: 1 12/15

63/3 + 27/15 is 114/5.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 15 is 15

Next, find the equivalent fraction of both fractional numbers with denominator 15
For the 1st fraction, since 3 × 5 = 15,
63/3 = 63 × 5/3 × 5 = 315/15
Likewise, for the 2nd fraction, since 15 × 1 = 15,
27/15 = 27 × 1/15 × 1 = 27/15
Add the two like fractions:
315/15 + 27/15 = 315 + 27/15 = 342/15
342/15 simplified gives 114/5
So, 63/3 + 27/15 = 114/5
In mixed form: 224/5

MathStep (Works offline)

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