Add 4/72 and 15/9, Solve 4/72 + 1 6/9 as a fraction

Add 4/72 and 15/9

1^st number: 4/72, 2^nd number: 1 6/9

4/72 + 15/9 is 31/18.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 9 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 72 × 1 = 72,
4/72 = 4 × 1/72 × 1 = 4/72
Likewise, for the 2nd fraction, since 9 × 8 = 72,
15/9 = 15 × 8/9 × 8 = 120/72
Add the two like fractions:
4/72 + 120/72 = 4 + 120/72 = 124/72
124/72 simplified gives 31/18
So, 4/72 + 15/9 = 31/18
In mixed form: 113/18

MathStep (Works offline)

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