Subtract 5/45 from 9/12
9/12 - 5/45 is 23/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
9/12 = 9 × 15/12 × 15 = 135/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
5/45 = 5 × 4/45 × 4 = 20/180 - Subtract the two like fractions:
135/180 - 20/180 = 135 - 20/180 = 115/180 - After reducing the fraction, the answer is 23/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12-5/45 9/12-10/45 9/24-5/45 9/12-5/90 27/12-5/45 9/12-15/45 9/36-5/45 45/12-5/45 9/12-25/45 9/60-5/45 63/12-5/45 9/12-35/45 9/84-5/45