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28-4x=-3-7(x-7)
We move all terms to the left:
28-4x-(-3-7(x-7))=0
We calculate terms in parentheses: -(-3-7(x-7)), so:We get rid of parentheses
-3-7(x-7)
determiningTheFunctionDomain -7(x-7)-3
We multiply parentheses
-7x+49-3
We add all the numbers together, and all the variables
-7x+46
Back to the equation:
-(-7x+46)
-4x+7x-46+28=0
We add all the numbers together, and all the variables
3x-18=0
We move all terms containing x to the left, all other terms to the right
3x=18
x=18/3
x=6
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