Updates Content/Chapter-2-1-simple-calculations/numerical-expressions/numerical-expressions.md

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Author: Svetlin Nakov

Content/Chapter-2-1-simple-calculations/concatenating-text-and-numbers/concatenating-text-and-numbers.md

@@ -33,6 +33,3 @@ var b = 2.5;
 var sum = "The sum is: " + (a + b);
 Console.WriteLine(sum);  // The sum is: 4
 ```
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Content/Chapter-2-1-simple-calculations/numerical-expressions/numerical-expressions.md

@@ -39,7 +39,7 @@ Test your solution here : [https://judge.softuni.org/Contests/Practice/Index/504
 
 ## Example: Circle Area and Perimeter
 
-Let's write a program that calculates **a circle area and perimeter** by reading its **radius r** .
+Let's write a program that calculates **a circle area and perimeter** by reading its **radius r**.
 
 Formulas:
 
@@ -109,6 +109,3 @@ var date = new DateTime(2017, 6, 14);
 var dateAfter5days = date.AddDays(5); // 14-Jun-17
 Console.WriteLine(dateAfter5days); // 19-Jun-17 00:00:00
 ```
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