Subtract 3/8 from 81/9
1st number: 9 0/9, 2nd number: 3/8
81/9 - 3/8 is 69/8.
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,
81/9 = 81 × 8/9 × 8 = 648/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
3/8 = 3 × 9/8 × 9 = 27/72 - Subtract the two like fractions:
648/72 - 27/72 = 648 - 27/72 = 621/72 - After reducing the fraction, the answer is 69/8
- In mixed form: 85/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/9-6/8 81/18-3/8 81/9-3/16 81/9-9/8 81/27-3/8 81/9-3/24 81/9-15/8 81/45-3/8 81/9-3/40 81/9-21/8 81/63-3/8 81/9-3/56