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x in (-oo:+oo)
14-(w/8) = 4*x-9 // - 4*x-9
9-(w/8)-(4*x)+14 = 0
9-(w/8)-4*x+14 = 0
23-1/8*w-4*x = 0 // - 23-1/8*w
-4*x = -(23-1/8*w) // : -4
x = (-(23-1/8*w))/(-4)
x = (23-1/8*w)/4
x = (23-1/8*w)/4
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