will someone explain to me how to solve this expression. 3x – 4 + x = 32 pls help. I am not good at this

get all the x stuff on one side, by adding 4 to both sides of the equation:

3x+x = 32+4

Now collect all the x stuff into one term:

4x = 36

Now divide both sides by 4, to get x all alone:

x = 9