Subtract 21/16 from 14/90
1st number: 14/90, 2nd number: 1 5/16
14/90 - 21/16 is -833/720.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
14/90 = 14 × 8/90 × 8 = 112/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
21/16 = 21 × 45/16 × 45 = 945/720 - Subtract the two like fractions:
112/720 - 945/720 = 112 - 945/720 = -833/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/90-21/16 14/90-42/16 14/90-21/32 42/90-21/16 14/90-63/16 14/90-21/48 70/90-21/16 14/90-21/80 98/90-21/16