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x in (-oo:+oo)
(3*x)/4-(1/2) = -8 // + 8
(3*x)/4-(1/2)+8 = 0
(3*x)/4-1/2+8 = 0
3/4*x+15/2 = 0 // - 15/2
3/4*x = -15/2 // : 3/4
x = -15/2/3/4
x = -10
x = -10
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