Subtract 90/9 from 16/18
1st number: 16/18, 2nd number: 10 0/9
16/18 - 90/9 is -82/9.
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,
16/18 = 16 × 1/18 × 1 = 16/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
90/9 = 90 × 2/9 × 2 = 180/18 - Subtract the two like fractions:
16/18 - 180/18 = 16 - 180/18 = -164/18 - After reducing the fraction, the answer is -82/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/18-90/9 16/36-90/9 16/18-90/18 48/18-90/9 16/54-90/9 16/18-90/27 80/18-90/9 16/90-90/9 16/18-90/45 16/18-90/63