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57=33-3(x-3)
We move all terms to the left:
57-(33-3(x-3))=0
We calculate terms in parentheses: -(33-3(x-3)), so:We get rid of parentheses
33-3(x-3)
determiningTheFunctionDomain -3(x-3)+33
We multiply parentheses
-3x+9+33
We add all the numbers together, and all the variables
-3x+42
Back to the equation:
-(-3x+42)
3x-42+57=0
We add all the numbers together, and all the variables
3x+15=0
We move all terms containing x to the left, all other terms to the right
3x=-15
x=-15/3
x=-5
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