Subtract 4/21 from 8/2
1st number: 4 0/2, 2nd number: 4/21
8/2 - 4/21 is 80/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
8/2 = 8 × 21/2 × 21 = 168/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
4/21 = 4 × 2/21 × 2 = 8/42 - Subtract the two like fractions:
168/42 - 8/42 = 168 - 8/42 = 160/42 - After reducing the fraction, the answer is 80/21
- In mixed form: 317/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/2-4/21 8/2-8/21 8/4-4/21 8/2-4/42 24/2-4/21 8/2-12/21 8/6-4/21 8/2-4/63 40/2-4/21 8/2-20/21 8/10-4/21 56/2-4/21 8/2-28/21 8/14-4/21