-30=-3(6+2z)

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Solution for -30=-3(6+2z) equation: 



-30=-3(6+2z)

We move all terms to the left:

-30-(-3(6+2z))=0

We add all the numbers together, and all the variables

-(-3(2z+6))-30=0



We calculate terms in parentheses: -(-3(2z+6)), so:

-3(2z+6)

We multiply parentheses

-6z-18

Back to the equation:

-(-6z-18)



We get rid of parentheses

6z+18-30=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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