Subtract 7/30 from 21/6
1st number: 3 3/6, 2nd number: 7/30
21/6 - 7/30 is 49/15.
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,
7/30 = 7 × 1/30 × 1 = 7/30 - Subtract the two like fractions:
105/30 - 7/30 = 105 - 7/30 = 98/30 - After reducing the fraction, the answer is 49/15
- In mixed form: 34/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6-7/30 21/6-14/30 21/12-7/30 21/6-7/60 63/6-7/30 21/6-21/30 21/18-7/30 21/6-7/90 21/6-35/30 21/30-7/30 21/6-49/30 21/42-7/30