Subtract 18/10 from 81/9
1st number: 9 0/9, 2nd number: 1 8/10
81/9 - 18/10 is 36/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
81/9 = 81 × 10/9 × 10 = 810/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
18/10 = 18 × 9/10 × 9 = 162/90 - Subtract the two like fractions:
810/90 - 162/90 = 810 - 162/90 = 648/90 - After reducing the fraction, the answer is 36/5
- In mixed form: 71/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/9-36/10 81/18-18/10 81/9-18/20 81/9-54/10 81/27-18/10 81/9-18/30 81/9-90/10 81/45-18/10 81/9-18/50 81/63-18/10 81/9-18/70