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i in (-oo:+oo)
6-((3*i)/8)-(11*i) = 0
(-3/8)*i-11*i+6 = 0
6-91/8*i = 0 // - 6
-91/8*i = -6 // : -91/8
i = -6/(-91/8)
i = 48/91
i = 48/91
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