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x in (-oo:+oo)
(3.5/100)*x = 5 // - 5
(3.5/100)*x-5 = 0
0.035*x-5 = 0 // + 5
0.035*x = 5 // : 0.035
x = 5/0.035
x = 142.85714286
x = 142.85714286
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