Subtract 15/80 from 9/18
9/18 - 15/80 is 5/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 18 × 40 = 720,
9/18 = 9 × 40/18 × 40 = 360/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
15/80 = 15 × 9/80 × 9 = 135/720 - Subtract the two like fractions:
360/720 - 135/720 = 360 - 135/720 = 225/720 - After reducing the fraction, the answer is 5/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 9/18-30/80 9/36-15/80 27/18-15/80 9/18-45/80 9/54-15/80 45/18-15/80 9/18-75/80 9/90-15/80 63/18-15/80