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y in (-oo:+oo)
8/11 = y/7 // - y/7
8/11-(y/7) = 0
8/11-1/7*y = 0 // - 8/11
-1/7*y = -8/11 // : -1/7
y = -8/11/(-1/7)
y = 56/11
y = 56/11
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