Respuesta :

ferrybukantoro

Step-by-step explanation:

(2x-4)(20-8) = 15×8

(2x-4)(12)= 120

2x-4 = 120/12

2x-4 = 10

2x = 10+4

2x= 14

x = 14/2

x=7

sqdancefan

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Answer:

  x = 7

Step-by-step explanation:

The angle bisector divides the sides proportionally.

  (2x -4)/8 = 15/(20 -8)

  3(2x -4) = 2(15) . . . . . . . . multiply by 24

  2x -4 = 10 . . . . . . . . . divide by 3

  x -2 = 5 . . . . . . . . divide by 2

  x = 7 . . . . . . . add 2

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