Subtract 8/80 from 9/5
1st number: 1 4/5, 2nd number: 8/80
9/5 - 8/80 is 17/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 5 × 16 = 80,
9/5 = 9 × 16/5 × 16 = 144/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
8/80 = 8 × 1/80 × 1 = 8/80 - Subtract the two like fractions:
144/80 - 8/80 = 144 - 8/80 = 136/80 - After reducing the fraction, the answer is 17/10
- In mixed form: 17/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/5-8/80 9/5-16/80 9/10-8/80 27/5-8/80 9/5-24/80 9/15-8/80 45/5-8/80 9/5-40/80 9/25-8/80 63/5-8/80 9/5-56/80 9/35-8/80