Subtract 27/21 from 9/6
1st number: 1 3/6, 2nd number: 1 6/21
9/6 - 27/21 is 3/14.
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,
9/6 = 9 × 7/6 × 7 = 63/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
27/21 = 27 × 2/21 × 2 = 54/42 - Subtract the two like fractions:
63/42 - 54/42 = 63 - 54/42 = 9/42 - After reducing the fraction, the answer is 3/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/6-27/21 9/6-54/21 9/12-27/21 9/6-27/42 27/6-27/21 9/6-81/21 9/18-27/21 9/6-27/63 45/6-27/21 9/30-27/21 63/6-27/21 9/42-27/21