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(1/6)*(6*x-9) = -9/2-(5/2) // + -9/2-(5/2)
(1/6)*(6*x-9)-(-9/2)+5/2 = 0
(1/6)*(6*x-9)+9/2+5/2 = 0
1/6*(6*x-9)+9/2+5/2 = 0
(1/6*2*(6*x-9))/2+9/2+5/2 = 0
1/6*2*(6*x-9)+5+9 = 0
2*x+5+6 = 0
2*x+11 = 0
(2*x+11)/2 = 0
(2*x+11)/2 = 0 // * 2
2*x+11 = 0
2*x+11 = 0 // - 11
2*x = -11 // : 2
x = -11/2
x = -11/2
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