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x in (-oo:+oo)
19/31 = x/4500 // - x/4500
19/31-(x/4500) = 0
19/31-1/4500*x = 0 // - 19/31
-1/4500*x = -19/31 // : -1/4500
x = -19/31/(-1/4500)
x = 85500/31
x = 85500/31
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