2=-2(4z-9)

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Solution for 2=-2(4z-9) equation: 



2=-2(4z-9)

We move all terms to the left:

2-(-2(4z-9))=0



We calculate terms in parentheses: -(-2(4z-9)), so:

-2(4z-9)

We multiply parentheses

-8z+18

Back to the equation:

-(-8z+18)



We get rid of parentheses

8z-18+2=0

We add all the numbers together, and all the variables

8z-16=0

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

8z=16

z=16/8

z=2

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