Add 4/9 and 12/18
4/9 + 12/18 is 10/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 9 × 2 = 18,
4/9 = 4 × 2/9 × 2 = 8/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
12/18 = 12 × 1/18 × 1 = 12/18 - Add the two like fractions:
8/18 + 12/18 = 8 + 12/18 = 20/18 - 20/18 simplified gives 10/9
- So, 4/9 + 12/18 = 10/9
In mixed form: 11/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/9+12/18 4/9+24/18 4/18+12/18 4/9+12/36 12/9+12/18 4/9+36/18 4/27+12/18 4/9+12/54 20/9+12/18 4/9+60/18 4/45+12/18 4/9+12/90 28/9+12/18 4/9+84/18 4/63+12/18