Solve for y, z, x
x=-6
y=2
z=5
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z=-2y+9
Solve 2y+z=9 for z.
-2y+9-2y=1 x+y-2y+9=1
Substitute -2y+9 for z in the second and third equation.
y=2 x=y-8
Solve these equations for y and x respectively.
x=2-8
Substitute 2 for y in the equation x=y-8.
x=-6
Calculate x from x=2-8.
z=-2\times 2+9
Substitute 2 for y in the equation z=-2y+9.
z=5
Calculate z from z=-2\times 2+9.
y=2 z=5 x=-6
The system is now solved.
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