Add 20/30 and 6/9
20/30 + 6/9 is 4/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
20/30 = 20 × 3/30 × 3 = 60/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
6/9 = 6 × 10/9 × 10 = 60/90 - Add the two like fractions:
60/90 + 60/90 = 60 + 60/90 = 120/90 - 120/90 simplified gives 4/3
- So, 20/30 + 6/9 = 4/3
In mixed form: 11/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/30+6/9 20/30+12/9 20/60+6/9 20/30+6/18 60/30+6/9 20/30+18/9 20/90+6/9 20/30+6/27 20/30+30/9 20/30+6/45 20/30+42/9 20/30+6/63