-z-9=-4z+9

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Solution for -z-9=-4z+9 equation: 



-z-9=-4z+9

We move all terms to the left:

-z-9-(-4z+9)=0

We add all the numbers together, and all the variables

-1z-(-4z+9)-9=0

We get rid of parentheses

-1z+4z-9-9=0

We add all the numbers together, and all the variables

3z-18=0

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

3z=18

z=18/3

z=6

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