Add 40/18 and 20/45
1st number: 2 4/18, 2nd number: 20/45
40/18 + 20/45 is 8/3.
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,
40/18 = 40 × 5/18 × 5 = 200/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
20/45 = 20 × 2/45 × 2 = 40/90 - Add the two like fractions:
200/90 + 40/90 = 200 + 40/90 = 240/90 - 240/90 simplified gives 8/3
- So, 40/18 + 20/45 = 8/3
In mixed form: 22/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/18+20/45 40/18+40/45 40/36+20/45 40/18+20/90 40/18+60/45 40/54+20/45 40/90+20/45