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