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x in (-oo:+oo)
28-((2*x)/3) = 46 // - 46
28-((2*x)/3)-46 = 0
(-2/3)*x-46+28 = 0
-2/3*x-18 = 0 // + 18
-2/3*x = 18 // : -2/3
x = 18/(-2/3)
x = -27
x = -27
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