Subtract 9/7 from 20/6
1st number: 3 2/6, 2nd number: 1 2/7
20/6 - 9/7 is 43/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
20/6 = 20 × 7/6 × 7 = 140/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
9/7 = 9 × 6/7 × 6 = 54/42 - Subtract the two like fractions:
140/42 - 54/42 = 140 - 54/42 = 86/42 - After reducing the fraction, the answer is 43/21
- In mixed form: 21/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/6-9/7 20/6-18/7 20/12-9/7 20/6-9/14 60/6-9/7 20/6-27/7 20/18-9/7 20/6-9/21 20/6-45/7 20/30-9/7 20/6-9/35 20/6-63/7 20/42-9/7 20/6-9/49