Metode Subsitusi X-2y=2 3x+y=13

x - 2y= 2   (x3)⇒ 3x-6y = 6
3x+y = 13 (x1)⇒ 3x+y = 13
                           ________ _
                            0 - 7y = -7
                                    y= -7/-7 = 1
x-2y=2
x-2(1)=2
x-2=2
x = 2+2
x = 4