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x in (-oo:+oo)
(1/4)*(8*x-12) = (1/3)*(9*x-6) // - (1/3)*(9*x-6)
(1/4)*(8*x-12)-((1/3)*(9*x-6)) = 0
(1/4)*(8*x-12)+(-1/3)*(9*x-6) = 0
1/4*(8*x-12)-1/3*(9*x-6) = 0
1/4*(8*x-12)-1/3*(9*x-6) = 0
-x-1 = 0
-x-1 = 0
-x-1 = 0 // + 1
-x = 1 // * -1
x = -1
x = -1
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