Add 8/18 and 80/45
1st number: 8/18, 2nd number: 1 35/45
8/18 + 80/45 is 20/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
8/18 = 8 × 5/18 × 5 = 40/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
80/45 = 80 × 2/45 × 2 = 160/90 - Add the two like fractions:
40/90 + 160/90 = 40 + 160/90 = 200/90 - 200/90 simplified gives 20/9
- So, 8/18 + 80/45 = 20/9
In mixed form: 22/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/18+80/45 8/36+80/45 8/18+80/90 24/18+80/45 8/54+80/45 40/18+80/45 8/90+80/45 56/18+80/45