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18=2+4(x-1)
We move all terms to the left:
18-(2+4(x-1))=0
We calculate terms in parentheses: -(2+4(x-1)), so:We get rid of parentheses
2+4(x-1)
determiningTheFunctionDomain 4(x-1)+2
We multiply parentheses
4x-4+2
We add all the numbers together, and all the variables
4x-2
Back to the equation:
-(4x-2)
-4x+2+18=0
We add all the numbers together, and all the variables
-4x+20=0
We move all terms containing x to the left, all other terms to the right
-4x=-20
x=-20/-4
x=+5
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