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y in (-oo:+oo)
-6*y-((2/5)*y) = 4/5+4/5 // - 4/5+4/5
-6*y-((2/5)*y)-(4/5)-(4/5) = 0
(-2/5)*y-6*y-4/5-4/5 = 0
-32/5*y-8/5 = 0 // + 8/5
-32/5*y = 8/5 // : -32/5
y = 8/5/(-32/5)
y = -1/4
y = -1/4
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