Respuesta :

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2(3x - 4) = 2x + 12

6x - 8 = 2x + 12

4x = 20

x = 5

AB = 3(5) - 4 = 11

AC = 2(5) + 12 = 22

BC = 7(5) - 2 = 35 - 2 = 33

AC:BC = 22:33 = 2:3

Answer:

AC : BC = 2 : 3

Step-by-step explanation:

AB : AC = 1 : 2

therefor

2(3x - 4) = 2x + 12

6x - 8 = 2x + 12

4x = 20

x = 5

-----------------

AC = 2x + 12 = 22

BC = 7x - 2 = 33

AC : BC = 22 : 33

Divide by 11

AC : BC = 2 : 3