Firstly subtract 4 from both sides
Then we are left with the the cube root of 6x +12 which equals to 8
How we do we undo a cube root you say!
We exponentiate both sides to the third power!
So now we got ride of the cube root sign and are just left with:
6x+12=8^3
6x+12= 512
Subtract 12 from both sides
And you get 6x=500
Divide by six
500/6=x
Simplify
250/3
Hope this helped!
