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-4 over 5k= 7over 9

Guest Apr 4, 2017
 #1
avatar+89789 
+1

-4 / 5k    =   7  / 9   cross-multiply

 

-4 * 9   =  5k * 7      simplify

 

-36   =  35k       divide both sides by 35  

 

-36 / 35   =   k 

 

 

cool cool cool

CPhill  Apr 4, 2017

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