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avatar+164 

Work out the length of the side of the square 

 

4(x-2) cm      (5x-20)cm

 Apr 22, 2018
 #1
avatar+98044 
+1

Assuming that   4(x - 2)  and (5x - 20)  are the side lengths.....because all sides of a square are equal, we have

 

4(x - 2) = 5x  - 20

 

4x  - 8  =  5x  - 20        add 20 to both sides, subtract 4x from both sides

 

12  =  x

 

So....the side length  is   4(12 - 2)  =  4 * 10   =  40 cm

 

 

cool cool cool

 Apr 22, 2018

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