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x in (-oo:+oo)
-1/3 = (2/3)*x-5 // - (2/3)*x-5
5-((2/3)*x)-1/3 = 0
(-2/3)*x-1/3+5 = 0
14/3-2/3*x = 0 // - 14/3
-2/3*x = -14/3 // : -2/3
x = -14/3/(-2/3)
x = 7
x = 7
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