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x in (-oo:+oo)
(3/4)*x-(-1/2) = -8 // + 8
(3/4)*x-(-1/2)+8 = 0
(3/4)*x+1/2+8 = 0
3/4*x+17/2 = 0 // - 17/2
3/4*x = -17/2 // : 3/4
x = -17/2/3/4
x = -34/3
x = -34/3
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