-1/2z=-4

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Solution for -1/2z=-4 equation: 


z in (-oo:+oo)

(-1/2)*z = -4 // + 4

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

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

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

z = -4/(-1/2)

z = 8

z = 8

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