Subtract 9/18 from 45/9
1st number: 5 0/9, 2nd number: 9/18
45/9 - 9/18 is 9/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 9 × 2 = 18,
45/9 = 45 × 2/9 × 2 = 90/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
9/18 = 9 × 1/18 × 1 = 9/18 - Subtract the two like fractions:
90/18 - 9/18 = 90 - 9/18 = 81/18 - After reducing the fraction, the answer is 9/2
- In mixed form: 41/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/9-9/18 45/18-9/18 45/9-9/36 45/9-27/18 45/27-9/18 45/9-9/54 45/9-45/18 45/9-9/90 45/9-63/18 45/63-9/18