Subtract 20/25 from 21/6
1st number: 3 3/6, 2nd number: 20/25
21/6 - 20/25 is 27/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 25 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 6 × 25 = 150,
21/6 = 21 × 25/6 × 25 = 525/150 - Likewise, for the 2nd fraction, since 25 × 6 = 150,
20/25 = 20 × 6/25 × 6 = 120/150 - Subtract the two like fractions:
525/150 - 120/150 = 525 - 120/150 = 405/150 - After reducing the fraction, the answer is 27/10
- In mixed form: 27/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6-20/25 21/6-40/25 21/12-20/25 21/6-20/50 63/6-20/25 21/6-60/25 21/18-20/25 21/6-20/75 21/30-20/25 21/42-20/25