Add 4/16 and 72/63, Solve 4/16 + 1 9/63 as a fraction

Add 4/16 and 72/63

1^st number: 4/16, 2^nd number: 1 9/63

4/16 + 72/63 is 39/28.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 63 is 1008

Next, find the equivalent fraction of both fractional numbers with denominator 1008
For the 1st fraction, since 16 × 63 = 1008,
4/16 = 4 × 63/16 × 63 = 252/1008
Likewise, for the 2nd fraction, since 63 × 16 = 1008,
72/63 = 72 × 16/63 × 16 = 1152/1008
Add the two like fractions:
252/1008 + 1152/1008 = 252 + 1152/1008 = 1404/1008
1404/1008 simplified gives 39/28
So, 4/16 + 72/63 = 39/28
In mixed form: 111/28

MathStep (Works offline)

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