Subtract 7/9 from 5/80
5/80 - 7/9 is -103/144.
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,
5/80 = 5 × 9/80 × 9 = 45/720 - Likewise, for the 2nd fraction, since 9 × 80 = 720,
7/9 = 7 × 80/9 × 80 = 560/720 - Subtract the two like fractions:
45/720 - 560/720 = 45 - 560/720 = -515/720 - After reducing the fraction, the answer is -103/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/80-7/9 5/80-14/9 5/80-7/18 15/80-7/9 5/80-21/9 5/80-7/27 25/80-7/9 5/80-35/9 5/80-7/45 35/80-7/9 5/80-49/9 5/80-7/63