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x-7=63-12(x-8)
We move all terms to the left:
x-7-(63-12(x-8))=0
We calculate terms in parentheses: -(63-12(x-8)), so:We get rid of parentheses
63-12(x-8)
determiningTheFunctionDomain -12(x-8)+63
We multiply parentheses
-12x+96+63
We add all the numbers together, and all the variables
-12x+159
Back to the equation:
-(-12x+159)
x+12x-159-7=0
We add all the numbers together, and all the variables
13x-166=0
We move all terms containing x to the left, all other terms to the right
13x=166
x=166/13
x=12+10/13
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