x-y-z=-4 2x+y+2z=-5 3x-y-z=-6
Matematika
irapurba1
Pertanyaan
x-y-z=-4
2x+y+2z=-5
3x-y-z=-6
2x+y+2z=-5
3x-y-z=-6
1 Jawaban
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1. Jawaban afcldg
x-y-z=-4
-y-z=-4-×
3x-y-z=-6
3x -4-x=-6
2x=-2
x=-1
-y-z=-4-(-1)
-y-z=-3
y=3-z
2x+y+2z=-5
2 (-1)+(3-z)+2z=-5
-2+3-z+2z=-5
z=-5-1
z=-6
y=3-z
y=3-(-6)
y=9