Subtract 20/42 from 70/6
1st number: 11 4/6, 2nd number: 20/42
70/6 - 20/42 is 235/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 42 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 42 × 1 = 42,
20/42 = 20 × 1/42 × 1 = 20/42 - Subtract the two like fractions:
490/42 - 20/42 = 490 - 20/42 = 470/42 - After reducing the fraction, the answer is 235/21
- In mixed form: 114/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/6-40/42 70/12-20/42 70/6-20/84 70/6-60/42 70/18-20/42 70/30-20/42 70/42-20/42