Subtract 40/21 from 70/6
1st number: 11 4/6, 2nd number: 1 19/21
70/6 - 40/21 is 205/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
70/6 = 70 × 7/6 × 7 = 490/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
40/21 = 40 × 2/21 × 2 = 80/42 - Subtract the two like fractions:
490/42 - 80/42 = 490 - 80/42 = 410/42 - After reducing the fraction, the answer is 205/21
- In mixed form: 916/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/6-80/21 70/12-40/21 70/6-40/42 70/18-40/21 70/6-40/63 70/30-40/21 70/42-40/21