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y in (-oo:+oo)
-3/2 = (-2/5)*y-(5/3) // - (-2/5)*y-(5/3)
5/3-((-2/5)*y)-3/2 = 0
(2/5)*y-3/2+5/3 = 0
2/5*y+1/6 = 0 // - 1/6
2/5*y = -1/6 // : 2/5
y = -1/6/2/5
y = -5/12
y = -5/12
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