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x in (-oo:+oo)
8^-5*x-6 = (1/8)^10*x // - (1/8)^10*x
8^-5*x-((1/8)^10*x)-6 = 0
32767/1073741824*x-6 = 0 // + 6
32767/1073741824*x = 6 // : 32767/1073741824
x = 6/32767/1073741824
x = 6442450944/32767
x = 6442450944/32767
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