8=4(-1+z)

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Solution for 8=4(-1+z) equation: 



8=4(-1+z)

We move all terms to the left:

8-(4(-1+z))=0

We add all the numbers together, and all the variables

-(4(z-1))+8=0



We calculate terms in parentheses: -(4(z-1)), so:

4(z-1)

We multiply parentheses

4z-4

Back to the equation:

-(4z-4)



We get rid of parentheses

-4z+4+8=0

We add all the numbers together, and all the variables

-4z+12=0

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

-4z=-12

z=-12/-4

z=+3

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