6=-2(-9-3z)

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Solution for 6=-2(-9-3z) equation: 



6=-2(-9-3z)

We move all terms to the left:

6-(-2(-9-3z))=0

We add all the numbers together, and all the variables

-(-2(-3z-9))+6=0



We calculate terms in parentheses: -(-2(-3z-9)), so:

-2(-3z-9)

We multiply parentheses

6z+18

Back to the equation:

-(6z+18)



We get rid of parentheses

-6z-18+6=0

We add all the numbers together, and all the variables

-6z-12=0

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

-6z=12

z=12/-6

z=-2

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