2-2z=-2(9+z)+2z

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



2-2z=-2(9+z)+2z

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



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

-2(z+9)+2z

We add all the numbers together, and all the variables

2z-2(z+9)

We multiply parentheses

2z-2z-18

We add all the numbers together, and all the variables

-18

Back to the equation:

-(-18)



We add all the numbers together, and all the variables

-2z+20=0

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

-2z=-20

z=-20/-2

z=+10

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