Subtract 1/20 from 7/16
7/16 - 1/20 is 31/80.
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,
7/16 = 7 × 5/16 × 5 = 35/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
1/20 = 1 × 4/20 × 4 = 4/80 - Subtract the two like fractions:
35/80 - 4/80 = 35 - 4/80 = 31/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/16-1/20 7/16-2/20 7/32-1/20 7/16-1/40 21/16-1/20 7/16-3/20 7/48-1/20 7/16-1/60 35/16-1/20 7/16-5/20 7/80-1/20 49/16-1/20 7/16-7/20