Add 15/75 and 12/9
1st number: 15/75, 2nd number: 1 3/9
15/75 + 12/9 is 23/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 9 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 75 × 3 = 225,
15/75 = 15 × 3/75 × 3 = 45/225 - Likewise, for the 2nd fraction, since 9 × 25 = 225,
12/9 = 12 × 25/9 × 25 = 300/225 - Add the two like fractions:
45/225 + 300/225 = 45 + 300/225 = 345/225 - 345/225 simplified gives 23/15
- So, 15/75 + 12/9 = 23/15
In mixed form: 18/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/75+12/9 15/75+24/9 15/75+12/18 45/75+12/9 15/75+36/9 15/75+12/27 15/75+60/9 15/75+12/45 15/75+84/9 15/75+12/63