23=-8+4(z+9)

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Solution for 23=-8+4(z+9) equation: 



23=-8+4(z+9)

We move all terms to the left:

23-(-8+4(z+9))=0



We calculate terms in parentheses: -(-8+4(z+9)), so:

-8+4(z+9)

determiningTheFunctionDomain
4(z+9)-8

We multiply parentheses

4z+36-8

We add all the numbers together, and all the variables

4z+28

Back to the equation:

-(4z+28)



We get rid of parentheses

-4z-28+23=0

We add all the numbers together, and all the variables

-4z-5=0

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

-4z=5

z=5/-4

z=-1+1/4

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