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x in (-oo:+oo)
(4/8)*x = -3/16 // + -3/16
(4/8)*x-(-3/16) = 0
(4/8)*x+3/16 = 0
1/2*x+3/16 = 0 // - 3/16
1/2*x = -3/16 // : 1/2
x = -3/16/1/2
x = -3/8
x = -3/8
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