Add 18/8 and 7/9
1st number: 2 2/8, 2nd number: 7/9
18/8 + 7/9 is 109/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
18/8 = 18 × 9/8 × 9 = 162/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
7/9 = 7 × 8/9 × 8 = 56/72 - Add the two like fractions:
162/72 + 56/72 = 162 + 56/72 = 218/72 - 218/72 simplified gives 109/36
- So, 18/8 + 7/9 = 109/36
In mixed form: 31/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8+7/9 18/8+14/9 18/16+7/9 18/8+7/18 54/8+7/9 18/8+21/9 18/24+7/9 18/8+7/27 90/8+7/9 18/8+35/9 18/40+7/9 18/8+7/45 18/8+49/9 18/56+7/9 18/8+7/63