Subtract 5/20 from 16/18
16/18 - 5/20 is 23/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
16/18 = 16 × 10/18 × 10 = 160/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
5/20 = 5 × 9/20 × 9 = 45/180 - Subtract the two like fractions:
160/180 - 45/180 = 160 - 45/180 = 115/180 - After reducing the fraction, the answer is 23/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/18-5/20 16/18-10/20 16/36-5/20 16/18-5/40 48/18-5/20 16/18-15/20 16/54-5/20 16/18-5/60 80/18-5/20 16/18-25/20 16/90-5/20 16/18-35/20