z=9+-2z

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Solution for z=9+-2z equation: 


Simplifying
z = 9 + -2z

Solving
z = 9 + -2z

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '2z' to each side of the equation.
z + 2z = 9 + -2z + 2z

Combine like terms: z + 2z = 3z
3z = 9 + -2z + 2z

Combine like terms: -2z + 2z = 0
3z = 9 + 0
3z = 9

Divide each side by '3'.
z = 3

Simplifying
z = 3

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