Subtract 8/16 from 21/2
1st number: 10 1/2, 2nd number: 8/16
21/2 - 8/16 is 10/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 16 is 16
Next, find the equivalent fraction of both fractional numbers with denominator 16 - For the 1st fraction, since 2 × 8 = 16,
21/2 = 21 × 8/2 × 8 = 168/16 - Likewise, for the 2nd fraction, since 16 × 1 = 16,
8/16 = 8 × 1/16 × 1 = 8/16 - Subtract the two like fractions:
168/16 - 8/16 = 168 - 8/16 = 160/16 - After reducing the fraction, the answer is 10/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2-8/16 21/4-8/16 21/2-8/32 63/2-8/16 21/2-24/16 21/6-8/16 21/2-8/48 21/2-40/16 21/10-8/16 21/2-8/80 21/2-56/16 21/14-8/16