How do i solve this problem? i am completely lost

Answer

5

Explanation
This problem can be solved as follows:
MW and MK are secants to the circle and meet at M. 
From the properties of a circle we can say;

3×(3+2x+5) = 4×6
3(2x + 8) = 24
6x + 24 = 24
6x = 24 - 24

6x = 0
x = 0

KL = 2x + 5
     = 2 (0) + 5
     = 0 + 5
      = 5
     = 5

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