Subtract 1/9 from 81/10
1st number: 8 1/10, 2nd number: 1/9
81/10 - 1/9 is 719/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
81/10 = 81 × 9/10 × 9 = 729/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
1/9 = 1 × 10/9 × 10 = 10/90 - Subtract the two like fractions:
729/90 - 10/90 = 729 - 10/90 = 719/90 - In mixed form: 789/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/10-2/9 81/20-1/9 81/10-1/18 81/10-3/9 81/30-1/9 81/10-1/27 81/10-5/9 81/50-1/9 81/10-1/45 81/10-7/9 81/70-1/9 81/10-1/63