Subtract 80/9 from 18/10
1st number: 1 8/10, 2nd number: 8 8/9
18/10 - 80/9 is -319/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
18/10 = 18 × 9/10 × 9 = 162/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
80/9 = 80 × 10/9 × 10 = 800/90 - Subtract the two like fractions:
162/90 - 800/90 = 162 - 800/90 = -638/90 - After reducing the fraction, the answer is -319/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/10-80/9 18/20-80/9 18/10-80/18 54/10-80/9 18/30-80/9 18/10-80/27 90/10-80/9 18/50-80/9 18/10-80/45 18/70-80/9 18/10-80/63