Subtract 70/6 from 7/21
1st number: 7/21, 2nd number: 11 4/6
7/21 - 70/6 is -34/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
7/21 = 7 × 2/21 × 2 = 14/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
70/6 = 70 × 7/6 × 7 = 490/42 - Subtract the two like fractions:
14/42 - 490/42 = 14 - 490/42 = -476/42 - After reducing the fraction, the answer is -34/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/21-70/6 7/42-70/6 7/21-70/12 7/63-70/6 7/21-70/18 35/21-70/6 7/21-70/30 49/21-70/6 7/21-70/42