3z=-6z-9

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Solution for 3z=-6z-9 equation: 



3z=-6z-9

We move all terms to the left:

3z-(-6z-9)=0

We get rid of parentheses

3z+6z+9=0

We add all the numbers together, and all the variables

9z+9=0

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

9z=-9

z=-9/9

z=-1

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