4=-1x/2

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Solution for 4=-1x/2 equation: 


x in (-oo:+oo)

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

4-((-1*x)/2) = 0

(1/2)*x+4 = 0

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

1/2*x = -4 // : 1/2

x = -4/1/2

x = -8

x = -8

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