Subtract 14/90 from 21/32
21/32 - 14/90 is 721/1440.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 90 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 32 × 45 = 1440,
21/32 = 21 × 45/32 × 45 = 945/1440 - Likewise, for the 2nd fraction, since 90 × 16 = 1440,
14/90 = 14 × 16/90 × 16 = 224/1440 - Subtract the two like fractions:
945/1440 - 224/1440 = 945 - 224/1440 = 721/1440
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/32-14/90 21/32-28/90 21/64-14/90 63/32-14/90 21/32-42/90 21/96-14/90 21/32-70/90 21/32-98/90