Subtract 10/21 from 10/16
10/16 - 10/21 is 25/168.
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,
10/16 = 10 × 21/16 × 21 = 210/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
10/21 = 10 × 16/21 × 16 = 160/336 - Subtract the two like fractions:
210/336 - 160/336 = 210 - 160/336 = 50/336 - After reducing the fraction, the answer is 25/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/16-10/21 10/16-20/21 10/32-10/21 10/16-10/42 30/16-10/21 10/16-30/21 10/48-10/21 10/16-10/63 50/16-10/21 10/16-50/21 10/80-10/21 70/16-10/21 10/16-70/21