Add 18/20 and 16/9
1st number: 18/20, 2nd number: 1 7/9
18/20 + 16/9 is 241/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
18/20 = 18 × 9/20 × 9 = 162/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
16/9 = 16 × 20/9 × 20 = 320/180 - Add the two like fractions:
162/180 + 320/180 = 162 + 320/180 = 482/180 - 482/180 simplified gives 241/90
- So, 18/20 + 16/9 = 241/90
In mixed form: 261/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/20+16/9 18/20+32/9 18/40+16/9 18/20+16/18 54/20+16/9 18/20+48/9 18/60+16/9 18/20+16/27 90/20+16/9 18/20+80/9 18/20+16/45 18/20+16/63