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x in (-oo:+oo)
(-27/18)*x = 1/2 // - 1/2
(-27/18)*x-(1/2) = 0
(-27/18)*x-1/2 = 0
-3/2*x-1/2 = 0 // + 1/2
-3/2*x = 1/2 // : -3/2
x = 1/2/(-3/2)
x = -1/3
x = -1/3
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