Respuesta :

Answer:

infinite number

Step-by-step explanation:

3x + 1 = 3(x - 1) + 4

3x + 1 = 3x - 3 + 4

3x + 1 = 3x + 1

3x = 3x

x = x

x = x is true for every value of x, so the equation has an infinite number of solutions.