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450+40n=975+n(45.90+19.55)
We move all terms to the left:
450+40n-(975+n(45.90+19.55))=0
We add all the numbers together, and all the variables
40n-(975+n(65.45))+450=0
We calculate terms in parentheses: -(975+n(65.45)), so:We get rid of parentheses
975+n(65.45)
determiningTheFunctionDomain n(65.45)+975
We multiply parentheses
65.45n+975
Back to the equation:
-(65.45n+975)
40n-65.45n-975+450=0
We add all the numbers together, and all the variables
-25.45n-525=0
We move all terms containing n to the left, all other terms to the right
-25.45n=525
n=525/-25.45
n=-20+16/25.45
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