Subtract 6/9 from 9/20
9/20 - 6/9 is -13/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
9/20 = 9 × 9/20 × 9 = 81/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
6/9 = 6 × 20/9 × 20 = 120/180 - Subtract the two like fractions:
81/180 - 120/180 = 81 - 120/180 = -39/180 - After reducing the fraction, the answer is -13/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20-6/9 9/20-12/9 9/40-6/9 9/20-6/18 27/20-6/9 9/20-18/9 9/60-6/9 9/20-6/27 45/20-6/9 9/20-30/9 9/20-6/45 63/20-6/9 9/20-42/9 9/20-6/63