having problem with this please help

Question

∛3x+5+7=3

Answer 1

I have a feeling there should be brackets somewhere
the way it stands .... assuming ∛(3x)

∛(3x) = 3 - 5 - 7
∛(3x) = -9
3x = -729
x = -243

If I take it just the way you typed it
∛3x + 5 + 7 = 3
∛3x = -9
x = -9/∛3 = appr -6.24

PLease let me know where the brackets should be

Answer 2

I believe it's
∛(3x+5)+7=3

there is NO solution for this question.
Cheers!
da.guy1[at]yah oo

Answer 3

Of course there's a solution.

∛(3x+5)+7=3
∛(3x+5) = -4
3x+5 = (-4)^3 = -64
3x = -69
x = -23

Check:
∛(-69+5)+7 = ∛-64 + 7 = -4+7 = 3