-2z=-4z-12

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Solution for -2z=-4z-12 equation: 



-2z=-4z-12

We move all terms to the left:

-2z-(-4z-12)=0

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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