Respuesta :

If 5 is the base, 3(x-1) is the argument:
3x-1=5²
3x=26
x=26/3

If 5 is with 3x-1, that is, if 5(3x-1) is the argument, and the base is 10:
5(3x-1)=10²
3x-1=20
3x=21
x=7
ACCESS MORE