Subtract 27/80 from 7/18
7/18 - 27/80 is 37/720.
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,
7/18 = 7 × 40/18 × 40 = 280/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
27/80 = 27 × 9/80 × 9 = 243/720 - Subtract the two like fractions:
280/720 - 243/720 = 280 - 243/720 = 37/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/18-27/80 7/18-54/80 7/36-27/80 21/18-27/80 7/18-81/80 7/54-27/80 35/18-27/80 7/90-27/80 49/18-27/80