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y in (-oo:+oo)
8 = (y/12)/8 // - (y/12)/8
8-((y/12)/8) = 0
(-1/96)*y+8 = 0
8-1/96*y = 0 // - 8
-1/96*y = -8 // : -1/96
y = -8/(-1/96)
y = 768
y = 768
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