-2(z-9)=-20

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Solution for -2(z-9)=-20 equation: 



-2(z-9)=-20

We move all terms to the left:

-2(z-9)-(-20)=0

We add all the numbers together, and all the variables

-2(z-9)+20=0

We multiply parentheses

-2z+18+20=0

We add all the numbers together, and all the variables

-2z+38=0

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

-2z=-38

z=-38/-2

z=+19

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