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x in (-oo:+oo)
x/y-2 = 3*y // - 3*y
x/y-(3*y)-2 = 0
x/y-3*y-2 = 0
x*y^-1-3*y-2 = 0 // + -3*y-2
x*y^-1 = -(-3*y-2) // : y^-1
x = (-(-3*y-2))/(y^-1)
x = (2-(-3*y))/(y^-1)
x = (2-(-3*y))/(y^-1)
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