Subtract 9/45 from 28/18
1st number: 1 10/18, 2nd number: 9/45
28/18 - 9/45 is 61/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
28/18 = 28 × 5/18 × 5 = 140/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
9/45 = 9 × 2/45 × 2 = 18/90 - Subtract the two like fractions:
140/90 - 18/90 = 140 - 18/90 = 122/90 - After reducing the fraction, the answer is 61/45
- In mixed form: 116/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/18-9/45 28/18-18/45 28/36-9/45 28/18-9/90 84/18-9/45 28/18-27/45 28/54-9/45 28/90-9/45 28/18-63/45