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x in (-oo:+oo)
(-3/2)*(x-6) = 12 // - 12
(-3/2)*(x-6)-12 = 0
-3/2*(x-6)-12 = 0
-3/2*(x-6)-12 = 0
-3/2*x-3 = 0
-3/2*x-3 = 0
-3/2*x-3 = 0 // + 3
-3/2*x = 3 // : -3/2
x = 3/(-3/2)
x = -2
x = -2
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