Can someone explain to me multi step algebra equations? 15 points thnks~

So take 4x-2x=4                                                                                                        first combine like terms so now u have 2x=4.          now you will isolate the x to find what it equals. divide 2 from both sides so u have x=2.                                      did this help any?  

Ok so the answer on  edgenuity. is d