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x in (-oo:+oo)
(-3/4)*x = (1*4)/2 // - (1*4)/2
(-3/4)*x-((1*4)/2) = 0
(-3/4)*x-2 = 0
-3/4*x-2 = 0 // + 2
-3/4*x = 2 // : -3/4
x = 2/(-3/4)
x = -8/3
x = -8/3
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