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40-4(n-26)=-16+15(n-21)
We move all terms to the left:
40-4(n-26)-(-16+15(n-21))=0
We multiply parentheses
-4n-(-16+15(n-21))+104+40=0
We calculate terms in parentheses: -(-16+15(n-21)), so:We add all the numbers together, and all the variables
-16+15(n-21)
determiningTheFunctionDomain 15(n-21)-16
We multiply parentheses
15n-315-16
We add all the numbers together, and all the variables
15n-331
Back to the equation:
-(15n-331)
-4n-(15n-331)+144=0
We get rid of parentheses
-4n-15n+331+144=0
We add all the numbers together, and all the variables
-19n+475=0
We move all terms containing n to the left, all other terms to the right
-19n=-475
n=-475/-19
n=+25
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