Subtract 1/20 from 15/16
15/16 - 1/20 is 71/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
15/16 = 15 × 5/16 × 5 = 75/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
1/20 = 1 × 4/20 × 4 = 4/80 - Subtract the two like fractions:
75/80 - 4/80 = 75 - 4/80 = 71/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/16-1/20 15/16-2/20 15/32-1/20 15/16-1/40 45/16-1/20 15/16-3/20 15/48-1/20 15/16-1/60 75/16-1/20 15/16-5/20 15/80-1/20 15/16-7/20