Add 4/9 and 1/20
4/9 + 1/20 is 89/180.
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,
4/9 = 4 × 20/9 × 20 = 80/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
1/20 = 1 × 9/20 × 9 = 9/180 - Add the two like fractions:
80/180 + 9/180 = 80 + 9/180 = 89/180 - So, 4/9 + 1/20 = 89/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/9+1/20 4/9+2/20 4/18+1/20 4/9+1/40 12/9+1/20 4/9+3/20 4/27+1/20 4/9+1/60 20/9+1/20 4/9+5/20 4/45+1/20 28/9+1/20 4/9+7/20 4/63+1/20