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0
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avatar+1783 

Please explain as if the answers weren't there to choose from. 

RainbowPanda  Mar 1, 2018
 #1
avatar+88980 
+2

C  =  5n + 40

        ______     multiply both sides by 9

            9

 

9C  =  5n + 40       subtract 40 from both sides

 

9C - 40  =  5n       divide both sides by 5

 

9C - 40

______    = n      notice that we can split th left side up as

     5

 

 

9C              40

___     -      __             =     n

  5               5

 

 

(9/5)C  -  8  = n           answer  "A"

 

 

cool cool cool

CPhill  Mar 1, 2018
 #2
avatar+1783 
0

Tysm :D

RainbowPanda  Mar 1, 2018

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