Tentukan penyelesain SPLDV berikut dengan metode subsitusi 1). x + 2y = 0 dan 2x - 3y = 7

Materi : SPLDV

Pembahasan :
x + 2y = 0 →→ x = -2y
2x - 3y = 7

Substitusi...
2x - 3y = 7
2(-2y) - 3y = 7
-4y - 3y = 7
-7y = 7
y = -1

Substitusi...
x = -2y
x = -2(-1)
x = 2

Hp : {2 , -1]

x + 2y = 0
x = -2y

2x - 3y = 7
2 (-2y) - 3y = 7
-4y - 3y = 7
-7y = 7
y = -1


x + 2y = 0
x + 2 (-1) = 0
x + -2 = 0
x = 2


Semoga Membantu!!