you must first distribute the 3 into the (x-4). then you have 2x+3x-12=8. Then you combine like terms meaning you add 2x and 3x together and have 5x. Now you have 5x-12=8. Then add 12 on both sides so now you have 5x= 20 and finally you have to divide both sides by 5 and then your answer is x=4
