Since 3 doesn't go into 11, you have to think of a number that BOTH
3 and 11 WILL go into.

Here's what you do:

1.  Think of a number which 3 and 11 will BOTH go into.  If you can't
    think of anything smaller, then multiply them together, and both
    3 and 11 will go into it. 

    3 times 11 = 33

2.  Now 3 goes into 33 11 times, and 11 goes into 33 3 times.

3.  Multiply the  by the fraction  and multiply
    the fraction  by the fraction .  [It's OK to
    do that because those are just 1 and you can multiply anything
    by 1 and it won't change:

    × - ×

4.  Multiply numerators and denominators:

     - 

5.  Now they both have the same denominator so all you have to do is
    subtract their numerators 11 - 6 and get 5, and then put that 5 
    over that common denominator 33 and you have

    

    That's the answer.

    Here is the way you write it on your paper:

     - ,  11×3 = 33 <-- that's called the LCD
    × - × 
     -  
     
   
Edwin