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9*x-((9/2)*(x-3)) = 27 // - 27
9*x-((9/2)*(x-3))-27 = 0
(-9/2)*(x-3)+9*x-27 = 0
9*x-9/2*(x-3)-27 = 0
9*x-9/2*(x-3)-27 = 0
9/2*x-27+27/2 = 0
9/2*x-27/2 = 0
9/2*x-27/2 = 0
9/2*x-27/2 = 0 // + 27/2
9/2*x = 27/2 // : 9/2
x = 27/2/9/2
x = 3
x = 3
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