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(2/3)*(6*x-9) = (7/4)*(x-4)-(1/3) // - (7/4)*(x-4)-(1/3)
(2/3)*(6*x-9)-((7/4)*(x-4))+1/3 = 0
(2/3)*(6*x-9)+(-7/4)*(x-4)+1/3 = 0
2/3*(6*x-9)-7/4*(x-4)+1/3 = 0
(2/3*3*(6*x-9))/3+(-7/4*3*(x-4))/3+1/3 = 0
2/3*3*(6*x-9)-7/4*3*(x-4)+1 = 0
27/4*x+1+3 = 0
27/4*x+4 = 0
(27/4*x+4)/3 = 0
(27/4*x+4)/3 = 0 // * 3
27/4*x+4 = 0
27/4*x+4 = 0 // - 4
27/4*x = -4 // : 27/4
x = -4/27/4
x = -16/27
x = -16/27
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