Subtract 50/45 from 9/80
1st number: 9/80, 2nd number: 1 5/45
9/80 - 50/45 is -719/720.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
9/80 = 9 × 9/80 × 9 = 81/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
50/45 = 50 × 16/45 × 16 = 800/720 - Subtract the two like fractions:
81/720 - 800/720 = 81 - 800/720 = -719/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/80-50/45 9/80-50/90 27/80-50/45 45/80-50/45 63/80-50/45