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x in (-oo:+oo)
Y = (1600*x)/2200 // - (1600*x)/2200
Y-((1600*x)/2200) = 0
Y+(-8/11)*x = 0
Y-8/11*x = 0 // - Y
-8/11*x = -Y // : -8/11
x = -Y/(-8/11)
x = 11/8*Y
x = 11/8*Y
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