Subtract 9/50 from 9/80
9/80 - 9/50 is -27/400.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 50 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 80 × 5 = 400,
9/80 = 9 × 5/80 × 5 = 45/400 - Likewise, for the 2nd fraction, since 50 × 8 = 400,
9/50 = 9 × 8/50 × 8 = 72/400 - Subtract the two like fractions:
45/400 - 72/400 = 45 - 72/400 = -27/400
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/80-9/50 9/80-18/50 27/80-9/50 9/80-27/50 45/80-9/50 9/80-45/50 63/80-9/50 9/80-63/50