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x in (-oo:+oo)
(-3/8)*x-(5/2) = 1/4 // - 1/4
(-3/8)*x-(5/2)-(1/4) = 0
(-3/8)*x-5/2-1/4 = 0
-3/8*x-11/4 = 0 // + 11/4
-3/8*x = 11/4 // : -3/8
x = 11/4/(-3/8)
x = -22/3
x = -22/3
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