Subtract 40/5 from 9/80
1st number: 9/80, 2nd number: 8 0/5
9/80 - 40/5 is -631/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 5 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
9/80 = 9 × 1/80 × 1 = 9/80 - Likewise, for the 2nd fraction, since 5 × 16 = 80,
40/5 = 40 × 16/5 × 16 = 640/80 - Subtract the two like fractions:
9/80 - 640/80 = 9 - 640/80 = -631/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/80-40/5 9/80-80/5 9/80-40/10 27/80-40/5 9/80-40/15 45/80-40/5 9/80-40/25 63/80-40/5 9/80-40/35