3z-(z-1)=-9

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Solution for 3z-(z-1)=-9 equation: 



3z-(z-1)=-9

We move all terms to the left:

3z-(z-1)-(-9)=0

We add all the numbers together, and all the variables

3z-(z-1)+9=0

We get rid of parentheses

3z-z+1+9=0

We add all the numbers together, and all the variables

2z+10=0

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

2z=-10

z=-10/2

z=-5

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