Subtract 49/90 from 4/9
4/9 - 49/90 is -1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
4/9 = 4 × 10/9 × 10 = 40/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
49/90 = 49 × 1/90 × 1 = 49/90 - Subtract the two like fractions:
40/90 - 49/90 = 40 - 49/90 = -9/90 - After reducing the fraction, the answer is -1/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/9-49/90 4/9-98/90 4/18-49/90 12/9-49/90 4/27-49/90 20/9-49/90 4/45-49/90 28/9-49/90 4/63-49/90