Respuesta :

Answer:

x = - 3

Step-by-step explanation:

- x - 15 - 3x = x , that is

- 4x - 15 = x ( subtract x from both sides )

- 5x - 15 = 0 ( add 15 to both sides )

- 5x = 15 ( divide both sides by - 5 )

x = - 3

ACCESS MORE