Add 3/9 and 9/20
3/9 + 9/20 is 47/60.
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,
9/20 = 9 × 9/20 × 9 = 81/180 - Add the two like fractions:
60/180 + 81/180 = 60 + 81/180 = 141/180 - 141/180 simplified gives 47/60
- So, 3/9 + 9/20 = 47/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/9+9/20 3/9+18/20 3/18+9/20 3/9+9/40 3/9+27/20 3/27+9/20 3/9+9/60 15/9+9/20 3/9+45/20 3/45+9/20 21/9+9/20 3/9+63/20 3/63+9/20