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25=-8+9(z+3)
We move all terms to the left:
25-(-8+9(z+3))=0
We calculate terms in parentheses: -(-8+9(z+3)), so:We get rid of parentheses
-8+9(z+3)
determiningTheFunctionDomain 9(z+3)-8
We multiply parentheses
9z+27-8
We add all the numbers together, and all the variables
9z+19
Back to the equation:
-(9z+19)
-9z-19+25=0
We add all the numbers together, and all the variables
-9z+6=0
We move all terms containing z to the left, all other terms to the right
-9z=-6
z=-6/-9
z=2/3
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