Subtract 90/9 from 49/18
1st number: 2 13/18, 2nd number: 10 0/9
49/18 - 90/9 is -131/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 18 × 1 = 18,
49/18 = 49 × 1/18 × 1 = 49/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
90/9 = 90 × 2/9 × 2 = 180/18 - Subtract the two like fractions:
49/18 - 180/18 = 49 - 180/18 = -131/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/18-90/9 49/36-90/9 49/18-90/18 49/54-90/9 49/18-90/27 49/90-90/9 49/18-90/45 49/18-90/63