30=-2(-2z+6)

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



30=-2(-2z+6)

We move all terms to the left:

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



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

-2(-2z+6)

We multiply parentheses

4z-12

Back to the equation:

-(4z-12)



We get rid of parentheses

-4z+12+30=0

We add all the numbers together, and all the variables

-4z+42=0

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

-4z=-42

z=-42/-4

z=10+1/2

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