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X in (-oo:+oo)
(3*X)/4-2.5 = 2.3 // - 2.3
(3*X)/4-2.5-2.3 = 0
3/4*X-4.8 = 0 // + 4.8
3/4*X = 4.8 // : 3/4
X = 4.8/3/4
X = 6.4
X = 6.4
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