Subtract 7/5 from 9/18
1st number: 9/18, 2nd number: 1 2/5
9/18 - 7/5 is -9/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 5 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
9/18 = 9 × 5/18 × 5 = 45/90 - Likewise, for the 2nd fraction, since 5 × 18 = 90,
7/5 = 7 × 18/5 × 18 = 126/90 - Subtract the two like fractions:
45/90 - 126/90 = 45 - 126/90 = -81/90 - After reducing the fraction, the answer is -9/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 9/18-14/5 9/36-7/5 9/18-7/10 27/18-7/5 9/18-21/5 9/54-7/5 9/18-7/15 45/18-7/5 9/18-35/5 9/90-7/5 9/18-7/25 63/18-7/5 9/18-49/5 9/18-7/35