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x in (-oo:+oo)
(4/3)*(-2*x-8) = 0
4/3*(-2*x-8) = 0
( -2*x-8 )
-2*x-8 = 0 // + 8
-2*x = 8 // : -2
x = 8/(-2)
x = -4
( 4/3 )
4/3 = 0
x belongs to the empty set
x = -4
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