8 - 

First, make the denominators the same. / Your problem should look like: 8 × 

 - 

 .
Second, simplify. Denominators are now the same. / Your problem should look like: 

 - 

 . 
Third, join the denominators. / Your problem should look like: 

 . 
Fourth, simplify. / Your problem should look like: 

 .
Fifth, convert to mixed fraction. / Your problem should look like: 

 which is your answer.