3+4x=3x+2
?

neeed help.

3+4x = 3x-2

=> 4x-3x = -2 - 3
=> x = -5

You got it!

For those ones you put terms that look alike together

3+4x=3x+2
subtract 3 (addition is communitive)
4x=3x-1
subtraact 3x
x=-1
check it:
3+4(-1)=3(-1)+2
3-4=2-3
-1=-1