kerjakan dengan metode eliminasi dan gambar! tolong bantu yaaa

5x + y = 0  (x3)⇒ 15x + 3y = 0
3x + 2y = 0(x5)⇒ 15x + 10y = 0
                             __________ _
                               0 + -7y =0
                                         y = -7
5x + y = 0   (x2)⇒  10x + 2y = 0
3x + 2y = 0 (x1) ⇒  3x + 2y  = 0
                               __________ _
                                7x + 0 = 0
                                         x = 7
jadi nilai 8x + 3y
               8(7) + 3 (-7)
                56 - 21
                 35