SPLTV X+Y+2=10, X-2Y+2Z=6, X+Z=7 tolong bantu y,sama caranya lngkp!

Mapel : Matematika
Kelas : X SMA
Materi : SPLTV

Pembahasan :
x + y + 2 = 10 —» x + y = 8
x - 2y + 2z = 6
x + z = 7

Eliminasi...
x + y = 8
x + z = 7
————— (-)
y - z = 1

Substitusi...
x - 2y + 2z = 6
x - 2(y - z) = 6
x - 2(1) = 6
x = 6 + 2
x = 8

Substitusi...
x + z = 7
8 + z = 7
z = -1

Substitusi...
y - z = 1
y + 1 = 1
y = 0

Hp : {8 , 0 , -1}