Add 10/80 and 4/12, Solve 10/80 + 4/12 as a fraction

Add 10/80 and 4/12

10/80 + 4/12 is 11/24.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 12 is 240

Next, find the equivalent fraction of both fractional numbers with denominator 240
For the 1st fraction, since 80 × 3 = 240,
10/80 = 10 × 3/80 × 3 = 30/240
Likewise, for the 2nd fraction, since 12 × 20 = 240,
4/12 = 4 × 20/12 × 20 = 80/240
Add the two like fractions:
30/240 + 80/240 = 30 + 80/240 = 110/240
110/240 simplified gives 11/24
So, 10/80 + 4/12 = 11/24

MathStep (Works offline)

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