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x in (-oo:+oo)
-2*x-3 = (5/6)*x+45/2 // - (5/6)*x+45/2
-2*x-((5/6)*x)-(45/2)-3 = 0
(-5/6)*x-2*x-45/2-3 = 0
-17/6*x-51/2 = 0 // + 51/2
-17/6*x = 51/2 // : -17/6
x = 51/2/(-17/6)
x = -9
x = -9
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