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x in (-oo:+oo)
((9*(1/2))/4)*x = 9/8 // - 9/8
((9*(1/2))/4)*x-(9/8) = 0
((9*(1/2))/4)*x-9/8 = 0
9/8*x-9/8 = 0 // + 9/8
9/8*x = 9/8 // : 9/8
x = 9/8/9/8
x = 1
x = 1
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