tolong dong 2x-3y=6 x-y=1 metode substitusi

Materi : SPLDV

Pembahasan :
x - y = 1 →→ x = 1 + y

Substitusi...
2x - 3y = 6
2(1 + y) - 3y = 6
2 + 2y - 3y = 6
-y = 4
y = -4

Substitusi...
x = 1 + y
x = 1 - 4
x = -3

Hp : {-3 , -4}