answered question 11/22/2010 How do I Solve using the multiplication principle first. Then use the elimination method. 2x+y=13 4x+2y=23? 2x+y=13 x-2 -4x-2y=-23 4x+2y=23 4x+2y=23 are you sure you have taken the question down right because both the x and the y … Read more