Subtract 7/9 from 3/80
3/80 - 7/9 is -533/720.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 9 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 9 × 80 = 720,
7/9 = 7 × 80/9 × 80 = 560/720 - Subtract the two like fractions:
27/720 - 560/720 = 27 - 560/720 = -533/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/80-7/9 3/80-14/9 3/80-7/18 9/80-7/9 3/80-21/9 3/80-7/27 15/80-7/9 3/80-35/9 3/80-7/45 21/80-7/9 3/80-49/9 3/80-7/63