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x in (-oo:+oo)
18/25 = x/175 // - x/175
18/25-(x/175) = 0
18/25-1/175*x = 0 // - 18/25
-1/175*x = -18/25 // : -1/175
x = -18/25/(-1/175)
x = 126
x = 126
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