x=-4/2y - solution

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Solution for x=-4/2y equation:

x in (-oo:+oo)

x = (-4/2)*y // - (-4/2)*y

x-((-4/2)*y) = 0

x+2*y = 0

x+2*y = 0 // - 2*y

x = -(2*y)

x = -2*y

x = -2*y

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