Subtract 18/8 from 6/9
1st number: 6/9, 2nd number: 2 2/8
6/9 - 18/8 is -19/12.
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,
6/9 = 6 × 8/9 × 8 = 48/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
18/8 = 18 × 9/8 × 9 = 162/72 - Subtract the two like fractions:
48/72 - 162/72 = 48 - 162/72 = -114/72 - After reducing the fraction, the answer is -19/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/9-18/8 6/9-36/8 6/18-18/8 6/9-18/16 18/9-18/8 6/9-54/8 6/27-18/8 6/9-18/24 30/9-18/8 6/9-90/8 6/45-18/8 6/9-18/40 42/9-18/8 6/63-18/8 6/9-18/56