Subtract 9/16 from 1/20
1/20 - 9/16 is -41/80.
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,
1/20 = 1 × 4/20 × 4 = 4/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
9/16 = 9 × 5/16 × 5 = 45/80 - Subtract the two like fractions:
4/80 - 45/80 = 4 - 45/80 = -41/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/20-9/16 1/20-18/16 1/40-9/16 1/20-9/32 3/20-9/16 1/20-27/16 1/60-9/16 1/20-9/48 5/20-9/16 1/20-45/16 1/20-9/80 7/20-9/16 1/20-63/16