Respuesta :

DarkBlue
x+3=-1 => x=-4
x+1=-5 => x=-6
x-2=-6  => x=-4
x-9=-13 => x=-4
So the different one is x+1=-5. Have a nice day!! ^^
cmw15drums
x+3 = -1
  -3    -3
x     = -4

x+1 = -5
   -1   -1
x    = -6

x-2 = -6
  +2   +2
x    = -4

x-9 = -13
  +9   +9
x    =  -4

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