Subtract 21/16 from 80/8
1st number: 10 0/8, 2nd number: 1 5/16
80/8 - 21/16 is 139/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 16 is 16
Next, find the equivalent fraction of both fractional numbers with denominator 16 - For the 1st fraction, since 8 × 2 = 16,
80/8 = 80 × 2/8 × 2 = 160/16 - Likewise, for the 2nd fraction, since 16 × 1 = 16,
21/16 = 21 × 1/16 × 1 = 21/16 - Subtract the two like fractions:
160/16 - 21/16 = 160 - 21/16 = 139/16 - In mixed form: 811/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/8-42/16 80/16-21/16 80/8-21/32 80/8-63/16 80/24-21/16 80/8-21/48 80/40-21/16 80/8-21/80 80/56-21/16