Subtract 20/15 from 9/36
1st number: 9/36, 2nd number: 1 5/15
9/36 - 20/15 is -13/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 15 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
9/36 = 9 × 5/36 × 5 = 45/180 - Likewise, for the 2nd fraction, since 15 × 12 = 180,
20/15 = 20 × 12/15 × 12 = 240/180 - Subtract the two like fractions:
45/180 - 240/180 = 45 - 240/180 = -195/180 - After reducing the fraction, the answer is -13/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/36-20/15 9/36-40/15 9/72-20/15 9/36-20/30 27/36-20/15 9/36-60/15 9/36-20/45 45/36-20/15 9/36-20/75 63/36-20/15