jika ( x,y) memenuhi spldv 4x - 3y =-3 dan 2x -5y =9 maka x-y =

Materi : SPLDV

Pembahasan :
4x - 3y = -3
4x - 10y = 18
——————— (-)
7y = -21
y = -3

Substitusi...
2x - 5(-3) = 9
2x + 15 = 9
2x = -6
x = -3

Maka...
x - y = -3 - (-3) = 0

ni kak jawabannya semoga bermanfaat yaaa