Subtract 10/21 from 9/16
9/16 - 10/21 is 29/336.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 21 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 16 × 21 = 336,
9/16 = 9 × 21/16 × 21 = 189/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
10/21 = 10 × 16/21 × 16 = 160/336 - Subtract the two like fractions:
189/336 - 160/336 = 189 - 160/336 = 29/336
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/16-10/21 9/16-20/21 9/32-10/21 9/16-10/42 27/16-10/21 9/16-30/21 9/48-10/21 9/16-10/63 45/16-10/21 9/16-50/21 9/80-10/21 63/16-10/21 9/16-70/21