Deleting and applying a probably unintended TODO

deleting a TODO line which definitely shouldn't be displayed to the users. At the same time applying changes which this TODO proposed

09/README.md

@@ -58,10 +58,7 @@ So let's say we want to imitate a brick wall. Looking at the wall, you can see a
 ![](brick.jpg)
 
 As a first step we need to know if the row of our thread is an even or odd number, because we can use that to determine if we need to offset the x in that row.
-
-____we have to fix these next two paragraphs together____
-
-To determine if our thread is in an odd or even row, we are going to use [```mod()```](../glossary/?search=mod) of ```2.0``` and then see if the result is under ```1.0``` or not. Take a look at the following formula and uncomment the two last lines.
+For that we are going to use [```mod()```](../glossary/?search=mod) of ```2.0``` and then see if the result is under ```1.0``` or not. Take a look at the following formula and uncomment the two last lines.
 
 <div class="simpleFunction" data="y = mod(x,2.0);
 // y = mod(x,2.0) < 1.0 ? 0. : 1. ;