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y in (-oo:+oo)
2*y-8 = (-1/2)*(3-(5*y)) // - (-1/2)*(3-(5*y))
2*y-((-1/2)*(3-(5*y)))-8 = 0
(1/2)*(3-5*y)+2*y-8 = 0
1/2*(3-5*y)+2*y-8 = 0
1/2*(3-5*y)+2*y-8 = 0
3/2-1/2*y-8 = 0
-1/2*y-13/2 = 0
-1/2*y-13/2 = 0
-1/2*y-13/2 = 0 // + 13/2
-1/2*y = 13/2 // : -1/2
y = 13/2/(-1/2)
y = -13
y = -13
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