Add 30/20 and 20/9
1st number: 1 10/20, 2nd number: 2 2/9
30/20 + 20/9 is 67/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
30/20 = 30 × 9/20 × 9 = 270/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
20/9 = 20 × 20/9 × 20 = 400/180 - Add the two like fractions:
270/180 + 400/180 = 270 + 400/180 = 670/180 - 670/180 simplified gives 67/18
- So, 30/20 + 20/9 = 67/18
In mixed form: 313/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/20+20/9 30/20+40/9 30/40+20/9 30/20+20/18 90/20+20/9 30/20+60/9 30/60+20/9 30/20+20/27 30/20+20/45 30/20+20/63