Subtract 45/9 from 98/80
1st number: 1 18/80, 2nd number: 5 0/9
98/80 - 45/9 is -151/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 9 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
98/80 = 98 × 9/80 × 9 = 882/720 - Likewise, for the 2nd fraction, since 9 × 80 = 720,
45/9 = 45 × 80/9 × 80 = 3600/720 - Subtract the two like fractions:
882/720 - 3600/720 = 882 - 3600/720 = -2718/720 - After reducing the fraction, the answer is -151/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/80-90/9 98/80-45/18 98/80-45/27 98/80-45/63