Subtract 21/14 from 20/2
1st number: 10 0/2, 2nd number: 1 7/14
20/2 - 21/14 is 17/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 14 is 14
Next, find the equivalent fraction of both fractional numbers with denominator 14 - For the 1st fraction, since 2 × 7 = 14,
20/2 = 20 × 7/2 × 7 = 140/14 - Likewise, for the 2nd fraction, since 14 × 1 = 14,
21/14 = 21 × 1/14 × 1 = 21/14 - Subtract the two like fractions:
140/14 - 21/14 = 140 - 21/14 = 119/14 - After reducing the fraction, the answer is 17/2
- In mixed form: 81/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/2-21/14 20/2-42/14 20/4-21/14 20/2-21/28 60/2-21/14 20/2-63/14 20/6-21/14 20/2-21/42 20/10-21/14 20/2-21/70 20/14-21/14 20/2-21/98