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x in (-oo:+oo)
(0.5*x)/8-2 = 15 // - 15
(0.5*x)/8-15-2 = 0
0.0625*x-17 = 0 // + 17
0.0625*x = 17 // : 0.0625
x = 17/0.0625
x = 272
x = 272
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