Subtract 5/16 from 18/20
18/20 - 5/16 is 47/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
18/20 = 18 × 4/20 × 4 = 72/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
5/16 = 5 × 5/16 × 5 = 25/80 - Subtract the two like fractions:
72/80 - 25/80 = 72 - 25/80 = 47/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/20-5/16 18/20-10/16 18/40-5/16 18/20-5/32 54/20-5/16 18/20-15/16 18/60-5/16 18/20-5/48 90/20-5/16 18/20-25/16 18/20-5/80 18/20-35/16