Subtract 20/21 from 50/2
1st number: 25 0/2, 2nd number: 20/21
50/2 - 20/21 is 505/21.
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,
50/2 = 50 × 21/2 × 21 = 1050/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
20/21 = 20 × 2/21 × 2 = 40/42 - Subtract the two like fractions:
1050/42 - 40/42 = 1050 - 40/42 = 1010/42 - After reducing the fraction, the answer is 505/21
- In mixed form: 241/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/2-40/21 50/4-20/21 50/2-20/42 50/2-60/21 50/6-20/21 50/2-20/63 50/10-20/21 50/14-20/21