Respuesta :

Answer:

x=3

Step-by-step explanation:

3x+4=13

3x=13−4

3x=9

x=3

Answer:

x=9

Step-by-step explanation:

(3x+4)^3=2197

cubic root both sides

3x+4=13

minus 4 from both sides

3x=9

divide by 3

x=9