57=18-3(4x-1)

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Solution for 57=18-3(4x-1) equation:



57=18-3(4x-1)
We move all terms to the left:
57-(18-3(4x-1))=0
We calculate terms in parentheses: -(18-3(4x-1)), so:
18-3(4x-1)
determiningTheFunctionDomain -3(4x-1)+18
We multiply parentheses
-12x+3+18
We add all the numbers together, and all the variables
-12x+21
Back to the equation:
-(-12x+21)
We get rid of parentheses
12x-21+57=0
We add all the numbers together, and all the variables
12x+36=0
We move all terms containing x to the left, all other terms to the right
12x=-36
x=-36/12
x=-3

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