Subtract 21/6 from 7/30
1st number: 7/30, 2nd number: 3 3/6
7/30 - 21/6 is -49/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 6 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
7/30 = 7 × 1/30 × 1 = 7/30 - Likewise, for the 2nd fraction, since 6 × 5 = 30,
21/6 = 21 × 5/6 × 5 = 105/30 - Subtract the two like fractions:
7/30 - 105/30 = 7 - 105/30 = -98/30 - After reducing the fraction, the answer is -49/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/30-21/6 7/30-42/6 7/60-21/6 7/30-21/12 21/30-21/6 7/30-63/6 7/90-21/6 7/30-21/18 35/30-21/6 7/30-21/30 49/30-21/6 7/30-21/42