tolong dong bantu:( himpunan penyelesaian SPLTV: x-y+z = -2 x-y-z = 0 x+y+z = -6 adalah ...

x-y+z = -2 ,.......(1)
x-y-z = 0 ..........(2)
x+y+z = -6 ....,...(3)

eljminasi 2 dan 3

x-y-z = 0
x+y+z = -6
---------------+
2x = -6
x = -6/2 = -3

eliminasi 1 dan 2
x-y+z = -2
x-y-z = 0
-------------- +
2x -2y= -2
2(-3) -2y = -2
-2y = -2+6
y = 4/-2 = -2

x+y+z = -6
-3+(-2)+z = -6
-5 + z = -6
z = -6+5 = -1

Himpunan penyelesaian {x,y,z} = {-3, -2, -1}
maaf klo salah