-2z=-4(z-3)

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Solution for -2z=-4(z-3) equation: 



-2z=-4(z-3)

We move all terms to the left:

-2z-(-4(z-3))=0



We calculate terms in parentheses: -(-4(z-3)), so:

-4(z-3)

We multiply parentheses

-4z+12

Back to the equation:

-(-4z+12)



We get rid of parentheses

-2z+4z-12=0

We add all the numbers together, and all the variables

2z-12=0

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

2z=12

z=12/2

z=6

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