Subtract 18/15 from 45/9
1st number: 5 0/9, 2nd number: 1 3/15
45/9 - 18/15 is 19/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 15 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
45/9 = 45 × 5/9 × 5 = 225/45 - Likewise, for the 2nd fraction, since 15 × 3 = 45,
18/15 = 18 × 3/15 × 3 = 54/45 - Subtract the two like fractions:
225/45 - 54/45 = 225 - 54/45 = 171/45 - After reducing the fraction, the answer is 19/5
- In mixed form: 34/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/9-18/15 45/9-36/15 45/18-18/15 45/9-18/30 45/9-54/15 45/27-18/15 45/9-18/45 45/9-90/15 45/9-18/75 45/63-18/15