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8[7 - (6x - 6)] + 6x = 0.

Guest Aug 7, 2017
 #1
avatar+87334 
+1

8[7 - (6x - 6)] + 6x = 0      simplify inside the brackets first

 

8 [ 7 - 6x + 6 ]  + 6x  =  0

 

8 [ 13 - 6x ] + 6x  = 0

 

104 - 48x + 6x  = 0

 

104 - 42x  = 0    add 42x to both sides

 

104  =  42x   divide both sides by 42

 

104 / 42  = x  =  52 / 21

 

 

cool cool cool

CPhill  Aug 7, 2017

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