Subtract 9/42 from 7/6
1st number: 1 1/6, 2nd number: 9/42
7/6 - 9/42 is 20/21.
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,
7/6 = 7 × 7/6 × 7 = 49/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
9/42 = 9 × 1/42 × 1 = 9/42 - Subtract the two like fractions:
49/42 - 9/42 = 49 - 9/42 = 40/42 - After reducing the fraction, the answer is 20/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/6-9/42 7/6-18/42 7/12-9/42 7/6-9/84 21/6-9/42 7/6-27/42 7/18-9/42 35/6-9/42 7/6-45/42 7/30-9/42 49/6-9/42 7/6-63/42 7/42-9/42