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x in (-oo:+oo)
5/2 = x/16 // - x/16
5/2-(x/16) = 0
5/2-1/16*x = 0 // - 5/2
-1/16*x = -5/2 // : -1/16
x = -5/2/(-1/16)
x = 40
x = 40
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