Add 1/20 and 9/18
1/20 + 9/18 is 11/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
1/20 = 1 × 9/20 × 9 = 9/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
9/18 = 9 × 10/18 × 10 = 90/180 - Add the two like fractions:
9/180 + 90/180 = 9 + 90/180 = 99/180 - 99/180 simplified gives 11/20
- So, 1/20 + 9/18 = 11/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/20+9/18 1/40+9/18 1/20+9/36 3/20+9/18 1/20+27/18 1/60+9/18 1/20+9/54 5/20+9/18 1/20+45/18 1/20+9/90 7/20+9/18 1/20+63/18