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x in (-oo:+oo)
-5/8 = x/16 // - x/16
-(x/16)-5/8 = 0
-1/16*x-5/8 = 0 // + 5/8
-1/16*x = 5/8 // : -1/16
x = 5/8/(-1/16)
x = -10
x = -10
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