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x in (-oo:+oo)
x-(15*(x/100)) = 92.88 // - 92.88
x-(15*(x/100))-92.88 = 0
x+(-3/20)*x-92.88 = 0
17/20*x-92.88 = 0 // + 92.88
17/20*x = 92.88 // : 17/20
x = 92.88/17/20
x = 109.27058824
x = 109.27058824
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