Subtract 25/30 from 21/6
1st number: 3 3/6, 2nd number: 25/30
21/6 - 25/30 is 8/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 6 × 5 = 30,
21/6 = 21 × 5/6 × 5 = 105/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
25/30 = 25 × 1/30 × 1 = 25/30 - Subtract the two like fractions:
105/30 - 25/30 = 105 - 25/30 = 80/30 - After reducing the fraction, the answer is 8/3
- In mixed form: 22/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6-25/30 21/6-50/30 21/12-25/30 21/6-25/60 63/6-25/30 21/6-75/30 21/18-25/30 21/6-25/90 21/30-25/30 21/42-25/30