Subtract 9/18 from 54/15
1st number: 3 9/15, 2nd number: 9/18
54/15 - 9/18 is 31/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
54/15 = 54 × 6/15 × 6 = 324/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
9/18 = 9 × 5/18 × 5 = 45/90 - Subtract the two like fractions:
324/90 - 45/90 = 324 - 45/90 = 279/90 - After reducing the fraction, the answer is 31/10
- In mixed form: 31/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30-9/18 54/15-9/36 54/15-27/18 54/45-9/18 54/15-9/54 54/15-45/18 54/75-9/18 54/15-9/90 54/15-63/18