Add 3/9 and 10/20
3/9 + 10/20 is 5/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 9 × 20 = 180,
3/9 = 3 × 20/9 × 20 = 60/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
10/20 = 10 × 9/20 × 9 = 90/180 - Add the two like fractions:
60/180 + 90/180 = 60 + 90/180 = 150/180 - 150/180 simplified gives 5/6
- So, 3/9 + 10/20 = 5/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/9+10/20 3/18+10/20 3/9+10/40 3/9+30/20 3/27+10/20 3/9+10/60 15/9+10/20 3/9+50/20 3/45+10/20 21/9+10/20 3/9+70/20 3/63+10/20