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-86=-5+3(1+7n)
We move all terms to the left:
-86-(-5+3(1+7n))=0
We add all the numbers together, and all the variables
-(-5+3(7n+1))-86=0
We calculate terms in parentheses: -(-5+3(7n+1)), so:We get rid of parentheses
-5+3(7n+1)
determiningTheFunctionDomain 3(7n+1)-5
We multiply parentheses
21n+3-5
We add all the numbers together, and all the variables
21n-2
Back to the equation:
-(21n-2)
-21n+2-86=0
We add all the numbers together, and all the variables
-21n-84=0
We move all terms containing n to the left, all other terms to the right
-21n=84
n=84/-21
n=-4
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