12=-2(2+z)

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Solution for 12=-2(2+z) equation: 



12=-2(2+z)

We move all terms to the left:

12-(-2(2+z))=0

We add all the numbers together, and all the variables

-(-2(z+2))+12=0



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

-2(z+2)

We multiply parentheses

-2z-4

Back to the equation:

-(-2z-4)



We get rid of parentheses

2z+4+12=0

We add all the numbers together, and all the variables

2z+16=0

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

2z=-16

z=-16/2

z=-8

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