Subtract 21/16 from 4/5
1st number: 4/5, 2nd number: 1 5/16
45 - 2116 is -4180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 5 × 16 = 80,
45 = 4 × 165 × 16 = 6480 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
2116 = 21 × 516 × 5 = 10580 - Subtract the two like fractions:
6480 - 10580 = 64 - 10580 = -4180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/5-21/16 4/5-42/16 4/10-21/16 4/5-21/32 12/5-21/16 4/5-63/16 4/15-21/16 4/5-21/48 20/5-21/16 4/25-21/16 4/5-21/80 28/5-21/16 4/35-21/16