Add 16/4 and 21/63, Solve 4 0/4 + 21/63 as a fraction

Add 16/4 and 21/63

1^st number: 4 0/4, 2^nd number: 21/63

16/4 + 21/63 is 13/3.

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,
16/4 = 16 × 63/4 × 63 = 1008/252
Likewise, for the 2nd fraction, since 63 × 4 = 252,
21/63 = 21 × 4/63 × 4 = 84/252
Add the two like fractions:
1008/252 + 84/252 = 1008 + 84/252 = 1092/252
1092/252 simplified gives 13/3
So, 16/4 + 21/63 = 13/3
In mixed form: 41/3

MathStep (Works offline)

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