Subtract 8/36 from 3/80
3/80 - 8/36 is -133/720.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 36 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
3/80 = 3 × 9/80 × 9 = 27/720 - Likewise, for the 2nd fraction, since 36 × 20 = 720,
8/36 = 8 × 20/36 × 20 = 160/720 - Subtract the two like fractions:
27/720 - 160/720 = 27 - 160/720 = -133/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/80-8/36 3/80-16/36 3/80-8/72 9/80-8/36 3/80-24/36 15/80-8/36 3/80-40/36 21/80-8/36 3/80-56/36