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55=30-5(x-3)
We move all terms to the left:
55-(30-5(x-3))=0
We calculate terms in parentheses: -(30-5(x-3)), so:We get rid of parentheses
30-5(x-3)
determiningTheFunctionDomain -5(x-3)+30
We multiply parentheses
-5x+15+30
We add all the numbers together, and all the variables
-5x+45
Back to the equation:
-(-5x+45)
5x-45+55=0
We add all the numbers together, and all the variables
5x+10=0
We move all terms containing x to the left, all other terms to the right
5x=-10
x=-10/5
x=-2
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