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i in (-oo:+oo)
2-((4*i)/(-7))-(8*i) = 0
(4/7)*i-8*i+2 = 0
2-52/7*i = 0 // - 2
-52/7*i = -2 // : -52/7
i = -2/(-52/7)
i = 7/26
i = 7/26
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