Subtract 9/54 from 18/15
1st number: 1 3/15, 2nd number: 9/54
18/15 - 9/54 is 31/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 15 × 18 = 270,
18/15 = 18 × 18/15 × 18 = 324/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
9/54 = 9 × 5/54 × 5 = 45/270 - Subtract the two like fractions:
324/270 - 45/270 = 324 - 45/270 = 279/270 - After reducing the fraction, the answer is 31/30
- In mixed form: 11/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15-9/54 18/15-18/54 18/30-9/54 54/15-9/54 18/15-27/54 18/45-9/54 90/15-9/54 18/15-45/54 18/75-9/54 18/15-63/54