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x in (-oo:+oo)
4/3 = x/161 // - x/161
4/3-(x/161) = 0
4/3-1/161*x = 0 // - 4/3
-1/161*x = -4/3 // : -1/161
x = -4/3/(-1/161)
x = 644/3
x = 644/3
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