Respuesta :

Answer:

x = 1

Step-by-step explanation:

x - 7 = - 3(x + 1) ← distribute parenthesis by - 3

x - 7 = - 3x - 3 ( add 3x to both sides )

4x - 7 = - 3 ( add 7 to both sides )

4x = 4 ( divide both sides by 4 )

x = 1