Diketahui sistem persamaan x+3y =7. x-2y= -8 Tolong bantu saya ka

Mapel : Matematika
Bab : Sistem Persamaan Linear Dua Variabel (SPLDV)

x + 3y = 7
x - 2y = -8
--------------  -
     5y = 15
       y = 15/5
       y = 3

   x + 3y = 7
x + 3(3) = 7
    x + 9 = 7
          x = 7 - 9
          x = -2

HP = { -2, 3 }