Subtract 90/9 from 49/80
1st number: 49/80, 2nd number: 10 0/9
49/80 - 90/9 is -751/80.
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,
49/80 = 49 × 9/80 × 9 = 441/720 - Likewise, for the 2nd fraction, since 9 × 80 = 720,
90/9 = 90 × 80/9 × 80 = 7200/720 - Subtract the two like fractions:
441/720 - 7200/720 = 441 - 7200/720 = -6759/720 - After reducing the fraction, the answer is -751/80
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 49/80-90/18 49/80-90/27 49/80-90/45 49/80-90/63