Subtract 81/4 from 6/9
1st number: 6/9, 2nd number: 20 1/4
6/9 - 81/4 is -235/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 4 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
6/9 = 6 × 4/9 × 4 = 24/36 - Likewise, for the 2nd fraction, since 4 × 9 = 36,
81/4 = 81 × 9/4 × 9 = 729/36 - Subtract the two like fractions:
24/36 - 729/36 = 24 - 729/36 = -705/36 - After reducing the fraction, the answer is -235/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/9-81/4 6/18-81/4 6/9-81/8 18/9-81/4 6/27-81/4 6/9-81/12 30/9-81/4 6/45-81/4 6/9-81/20 42/9-81/4 6/63-81/4 6/9-81/28