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x in (-oo:+oo)
(9/11)*x = 3/8 // - 3/8
(9/11)*x-(3/8) = 0
(9/11)*x-3/8 = 0
9/11*x-3/8 = 0 // + 3/8
9/11*x = 3/8 // : 9/11
x = 3/8/9/11
x = 11/24
x = 11/24
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