Subtract 10/18 from 9/45
9/45 - 10/18 is -16/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
9/45 = 9 × 2/45 × 2 = 18/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
10/18 = 10 × 5/18 × 5 = 50/90 - Subtract the two like fractions:
18/90 - 50/90 = 18 - 50/90 = -32/90 - After reducing the fraction, the answer is -16/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/45-10/18 9/45-20/18 9/90-10/18 9/45-10/36 27/45-10/18 9/45-30/18 9/45-10/54 9/45-50/18 9/45-10/90 63/45-10/18 9/45-70/18