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y in (-oo:+oo)
4*y+19/6 = 8*y-(1/6) // - 8*y-(1/6)
4*y-(8*y)+19/6+1/6 = 0
4*y-8*y+19/6+1/6 = 0
10/3-4*y = 0 // - 10/3
-4*y = -10/3 // : -4
y = -10/3/(-4)
y = 5/6
y = 5/6
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