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(x+3)/(x-9)=0
Domain of the equation: (x-9)!=0We multiply all the terms by the denominator
We move all terms containing x to the left, all other terms to the right
x!=9
x∈R
(x+3)=0
We get rid of parentheses
x+3=0
We move all terms containing x to the left, all other terms to the right
x=-3
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