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