z/2=-4 - solution

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Solution for z/2=-4 equation:

z in (-oo:+oo)

z/2 = -4 // + 4

z/2+4 = 0

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

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

z = -4/1/2

z = -8

z = -8

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