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x in (-oo:+oo)
437/15 = 6*x-((1/3)*x)+4/5 // - 6*x-((1/3)*x)+4/5
(1/3)*x-(6*x)+437/15-(4/5) = 0
(1/3)*x-6*x+437/15-4/5 = 0
85/3-17/3*x = 0 // - 85/3
-17/3*x = -85/3 // : -17/3
x = -85/3/(-17/3)
x = 5
x = 5
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