Add 40/18 and 80/9
1st number: 2 4/18, 2nd number: 8 8/9
40/18 + 80/9 is 100/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 18 × 1 = 18,
40/18 = 40 × 1/18 × 1 = 40/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
80/9 = 80 × 2/9 × 2 = 160/18 - Add the two like fractions:
40/18 + 160/18 = 40 + 160/18 = 200/18 - 200/18 simplified gives 100/9
- So, 40/18 + 80/9 = 100/9
In mixed form: 111/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/18+80/9 40/36+80/9 40/18+80/18 40/54+80/9 40/18+80/27 40/90+80/9 40/18+80/45 40/18+80/63