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x in (-oo:+oo)
(4/5)*(x-3) = (-2/3)*(x+5) // - (-2/3)*(x+5)
(4/5)*(x-3)-((-2/3)*(x+5)) = 0
(4/5)*(x-3)+(2/3)*(x+5) = 0
4/5*(x-3)+2/3*(x+5) = 0
4/5*(x-3)+2/3*(x+5) = 0
22/15*x+14/15 = 0
22/15*x+14/15 = 0
22/15*x+14/15 = 0 // - 14/15
22/15*x = -14/15 // : 22/15
x = -14/15/22/15
x = -7/11
x = -7/11
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