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x in (-oo:+oo)
14/300 = x/200 // - x/200
14/300-(x/200) = 0
7/150-1/200*x = 0 // - 7/150
-1/200*x = -7/150 // : -1/200
x = -7/150/(-1/200)
x = 28/3
x = 28/3
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