Subtract 20/9 from 8/80
1st number: 8/80, 2nd number: 2 2/9
8/80 - 20/9 is -191/90.
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,
8/80 = 8 × 9/80 × 9 = 72/720 - Likewise, for the 2nd fraction, since 9 × 80 = 720,
20/9 = 20 × 80/9 × 80 = 1600/720 - Subtract the two like fractions:
72/720 - 1600/720 = 72 - 1600/720 = -1528/720 - After reducing the fraction, the answer is -191/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/80-20/9 8/80-40/9 8/80-20/18 24/80-20/9 8/80-60/9 8/80-20/27 40/80-20/9 8/80-20/45 56/80-20/9 8/80-20/63