Subtract 28/80 from 10/9
1st number: 1 1/9, 2nd number: 28/80
10/9 - 28/80 is 137/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 9 × 80 = 720,
10/9 = 10 × 80/9 × 80 = 800/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
28/80 = 28 × 9/80 × 9 = 252/720 - Subtract the two like fractions:
800/720 - 252/720 = 800 - 252/720 = 548/720 - After reducing the fraction, the answer is 137/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/9-28/80 10/9-56/80 10/18-28/80 30/9-28/80 10/9-84/80 10/27-28/80 50/9-28/80 10/45-28/80 70/9-28/80 10/63-28/80