Add 18/9 and 9/20
1st number: 2 0/9, 2nd number: 9/20
18/9 + 9/20 is 49/20.
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,
18/9 = 18 × 20/9 × 20 = 360/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
9/20 = 9 × 9/20 × 9 = 81/180 - Add the two like fractions:
360/180 + 81/180 = 360 + 81/180 = 441/180 - 441/180 simplified gives 49/20
- So, 18/9 + 9/20 = 49/20
In mixed form: 29/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/9+9/20 18/9+18/20 18/9+9/40 54/9+9/20 18/9+27/20 18/27+9/20 18/9+9/60 90/9+9/20 18/9+45/20 18/45+9/20 18/9+63/20 18/63+9/20