Subtract 1/18 from 54/15
1st number: 3 9/15, 2nd number: 1/18
54/15 - 1/18 is 319/90.
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,
1/18 = 1 × 5/18 × 5 = 5/90 - Subtract the two like fractions:
324/90 - 5/90 = 324 - 5/90 = 319/90 - In mixed form: 349/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/15-2/18 54/30-1/18 54/15-1/36 54/15-3/18 54/45-1/18 54/15-1/54 54/15-5/18 54/75-1/18 54/15-1/90 54/15-7/18