Add 9/20 and 1/18
9/20 + 1/18 is 91/180.
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,
9/20 = 9 × 9/20 × 9 = 81/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
1/18 = 1 × 10/18 × 10 = 10/180 - Add the two like fractions:
81/180 + 10/180 = 81 + 10/180 = 91/180 - So, 9/20 + 1/18 = 91/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20+1/18 9/20+2/18 9/40+1/18 9/20+1/36 27/20+1/18 9/20+3/18 9/60+1/18 9/20+1/54 45/20+1/18 9/20+5/18 9/20+1/90 63/20+1/18 9/20+7/18