Question 14790
 You can only get 6 or 7 parts no matter how you tried was just wasting time.

 Because, you only cut it in 2 dimensional. You suppose a pizza as a piece of
 paper, while actually it is not.

 The answer is pretty simple: to cut the pizza as to cut a water melon.

 The first two vertical divisions(straight cuts) got 4 equal pieces. 
 
 Then the 3 third cut divides each of the one fourth into half horizonally. 

 That is the whole story.
  
 Also delete rid those redundant words having nothing to do with math.

 Kenny