19.5=-7.5+2(z-9)

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Solution for 19.5=-7.5+2(z-9) equation: 



19.5=-7.5+2(z-9)

We move all terms to the left:

19.5-(-7.5+2(z-9))=0



We calculate terms in parentheses: -(-7.5+2(z-9)), so:

-7.5+2(z-9)

determiningTheFunctionDomain
2(z-9)-7.5

We multiply parentheses

2z-18-7.5

We add all the numbers together, and all the variables

2z-25.5

Back to the equation:

-(2z-25.5)



We get rid of parentheses

-2z+25.5+19.5=0

We add all the numbers together, and all the variables

-2z+45=0

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

-2z=-45

z=-45/-2

z=22+1/2

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