Subtract 15/16 from 5/20
5/20 - 15/16 is -11/16.
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,
5/20 = 5 × 4/20 × 4 = 20/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
15/16 = 15 × 5/16 × 5 = 75/80 - Subtract the two like fractions:
20/80 - 75/80 = 20 - 75/80 = -55/80 - After reducing the fraction, the answer is -11/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20-15/16 5/20-30/16 5/40-15/16 5/20-15/32 15/20-15/16 5/20-45/16 5/60-15/16 5/20-15/48 25/20-15/16 5/20-75/16 5/20-15/80 35/20-15/16