1/2x=-y-4

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Solution for 1/2x=-y-4 equation: 


x in (-oo:+oo)

(1/2)*x = -y-4 // + -y-4

(1/2)*x+y+4 = 0

1/2*x+y+4 = 0 // - y+4

1/2*x = -(y+4) // : 1/2

x = (-(y+4))/1/2

x = -2*(y+4)

x = -2*(y+4)

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