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Solve for x, y, z
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x=-y-z
Solve x+y+z=0 for x.
2\left(-y-z\right)+3y+9z=0 6\left(-y-z\right)+y+8z=0
Substitute -y-z for x in the second and third equation.
y=-7z z=\frac{5}{2}y
Solve these equations for y and z respectively.
z=\frac{5}{2}\left(-7\right)z
Substitute -7z for y in the equation z=\frac{5}{2}y.
z=0
Solve z=\frac{5}{2}\left(-7\right)z for z.
y=-7\times 0
Substitute 0 for z in the equation y=-7z.
y=0
Calculate y from y=-7\times 0.
x=-0-0
Substitute 0 for y and 0 for z in the equation x=-y-z.
x=0
Calculate x from x=-0-0.
x=0 y=0 z=0
The system is now solved.