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