4×-5y=-12 dan 2x+3y=16

Mapel : Matematika
Bab : SPLDV

4x - 5y = -12    ⇒kali 1
2x + 3y = 16    ⇒kali 2

⇔ 4x - 5y = -12
⇔ 4x + 6y = 32
-----------------------  -
          -11y = -44
               y = -44/-11
               y = 4

  2x + 3y = 16
2x + 3(4) = 16
  2x + 12 = 16
          2x = 16 - 12
          2x = 4
            x = 4/2
            x = 2

HP = { 2, 4 }

Jawab. 

4x-5y = -12 lx1
2x+3y = 16 lx2

4x-5y = -12
4x+6y = 32
--------------- --
-11y = -44
y = -44/-11
y = 4.

2x+3y = 16.
2x+3(4) = 16.
2x+12 = 16.
2x = 4.
x = 2.

Jadi, penyelesaiannya (2,4).

May be useful.