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x in (-oo:+oo)
(5/8)*x+3 = 2*(x-4) // - 2*(x-4)
(5/8)*x-(2*(x-4))+3 = 0
(5/8)*x-2*(x-4)+3 = 0
(5*x)/8-2*(x-4)+3 = 0
(-2*8*(x-4))/8+(5*x)/8+(3*8)/8 = 0
5*x-2*8*(x-4)+3*8 = 0
24-11*x+64 = 0
88-11*x = 0
(88-11*x)/8 = 0
(88-11*x)/8 = 0 // * 8
88-11*x = 0
88-11*x = 0 // - 88
-11*x = -88 // : -11
x = -88/(-11)
x = 8
x = 8
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