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y in (-oo:+oo)
(1*y)/8 = 128 // - 128
(1*y)/8-128 = 0
y/8-128 = 0
1/8*y-128 = 0 // + 128
1/8*y = 128 // : 1/8
y = 128/1/8
y = 1024
y = 1024
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