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x in (-oo:+oo)
1-((5/0.03)*x) = 0
1-166.66666667*x = 0
1-166.66666667*x = 0 // - 1
-166.66666667*x = -1 // : -166.66666667
x = -1/(-166.66666667)
x = 0.006
x = 0.006
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