Add 15/72 and 20/6, Solve 15/72 + 3 2/6 as a fraction

Add 15/72 and 20/6

1^st number: 15/72, 2^nd number: 3 2/6

15/72 + 20/6 is 85/24.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 6 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 72 × 1 = 72,
15/72 = 15 × 1/72 × 1 = 15/72
Likewise, for the 2nd fraction, since 6 × 12 = 72,
20/6 = 20 × 12/6 × 12 = 240/72
Add the two like fractions:
15/72 + 240/72 = 15 + 240/72 = 255/72
255/72 simplified gives 85/24
So, 15/72 + 20/6 = 85/24
In mixed form: 313/24

MathStep (Works offline)

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