7=-12z+9(z-4)

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Solution for 7=-12z+9(z-4) equation: 



7=-12z+9(z-4)

We move all terms to the left:

7-(-12z+9(z-4))=0



We calculate terms in parentheses: -(-12z+9(z-4)), so:

-12z+9(z-4)

We multiply parentheses

-12z+9z-36

We add all the numbers together, and all the variables

-3z-36

Back to the equation:

-(-3z-36)



We get rid of parentheses

3z+36+7=0

We add all the numbers together, and all the variables

3z+43=0

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

3z=-43

z=-43/3

z=-14+1/3

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