z=-2z+9

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Solution for z=-2z+9 equation: 



z=-2z+9

We move all terms to the left:

z-(-2z+9)=0

We get rid of parentheses

z+2z-9=0

We add all the numbers together, and all the variables

3z-9=0

We move all terms containing z to the left, all other terms to the right

3z=9

z=9/3

z=3

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