Respostas

2013-09-24T08:54:51-03:00
AB//BC
B-A//C-B
(-2,-5)-(x,-3)//(-1,-3)-(-2,-5)
(-2-x,-8)//(1,2)

-2-x = -4                                       -8 = -4
  1                                                  2
-2-x=-4.(1)
-2-x=-4
-x=-4.(-2)
-x=-6   .(-1)
x=6

1 5 1