Respuesta :

Answer:

36

Step-by-step explanation:

7x+4 = 15x-12

7x = 15x-16

-8x = -16

-8x/-8 = -16/-8

x = 2

BD = 15x-12 + 9x

BD = 15(2)-12 + 9(2)

BD = 30-12 + 18

BD = 18 + 18

BD = 38

The answer is 36 I took the test. :)