Subtract 3/80 from 8/18
8/18 - 3/80 is 293/720.
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,
8/18 = 8 × 40/18 × 40 = 320/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
3/80 = 3 × 9/80 × 9 = 27/720 - Subtract the two like fractions:
320/720 - 27/720 = 320 - 27/720 = 293/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/18-3/80 8/18-6/80 8/36-3/80 24/18-3/80 8/18-9/80 8/54-3/80 40/18-3/80 8/18-15/80 8/90-3/80 56/18-3/80 8/18-21/80