Add 80/12 and 15/18
1st number: 6 8/12, 2nd number: 15/18
80/12 + 15/18 is 15/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
80/12 = 80 × 3/12 × 3 = 240/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
15/18 = 15 × 2/18 × 2 = 30/36 - Add the two like fractions:
240/36 + 30/36 = 240 + 30/36 = 270/36 - 270/36 simplified gives 15/2
- So, 80/12 + 15/18 = 15/2
In mixed form: 71/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/12+30/18 80/24+15/18 80/12+15/36 80/12+45/18 80/36+15/18 80/12+15/54 80/12+75/18 80/60+15/18 80/12+15/90 80/84+15/18