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x in (-oo:+oo)
(1/3)*y = (5/6)*x-2 // - (5/6)*x-2
(1/3)*y-((5/6)*x)+2 = 0
(-5/6)*x+(1/3)*y+2 = 0
1/3*y-5/6*x+2 = 0 // - 1/3*y+2
-5/6*x = -(1/3*y+2) // : -5/6
x = (-(1/3*y+2))/(-5/6)
x = 6/5*(1/3*y+2)
x = 6/5*(1/3*y+2)
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