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X-15=2/5(X+15)
We move all terms to the left:
X-15-(2/5(X+15))=0
Domain of the equation: 5(X+15))!=0We multiply all the terms by the denominator
X∈R
X*5(X+15))-(2-15*5(X+15))=0
Wy multiply elements
5X^2(X-75X(X=0
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