Respostas

2014-02-08T14:23:23-02:00
1)resolva as equações:    
  a)4x+6=34  
 4x =34 -6
 4x=28
 x= 28/4
 x= 7
  
  b)4x=1+3X    
4x -3x=1
x=1

 c)4(x+1) =4 (2x - 3)
4x +4 = 8x -12
4x -8x = -12 -4
-4x = -16
x=-16/-4
x=4

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