Subtract 90/8 from 5/9
1st number: 5/9, 2nd number: 11 2/8
5/9 - 90/8 is -385/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
5/9 = 5 × 8/9 × 8 = 40/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
90/8 = 90 × 9/8 × 9 = 810/72 - Subtract the two like fractions:
40/72 - 810/72 = 40 - 810/72 = -770/72 - After reducing the fraction, the answer is -385/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/9-90/8 5/18-90/8 5/9-90/16 15/9-90/8 5/27-90/8 5/9-90/24 25/9-90/8 5/45-90/8 5/9-90/40 35/9-90/8 5/63-90/8 5/9-90/56