Subtract 9/6 from 20/15
1st number: 1 5/15, 2nd number: 1 3/6
20/15 - 9/6 is -1/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 6 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
20/15 = 20 × 2/15 × 2 = 40/30 - Likewise, for the 2nd fraction, since 6 × 5 = 30,
9/6 = 9 × 5/6 × 5 = 45/30 - Subtract the two like fractions:
40/30 - 45/30 = 40 - 45/30 = -5/30 - After reducing the fraction, the answer is -1/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15-9/6 20/15-18/6 20/30-9/6 20/15-9/12 60/15-9/6 20/15-27/6 20/45-9/6 20/15-9/18 20/15-45/6 20/75-9/6 20/15-9/30 20/15-63/6 20/15-9/42