-4+1/2z=-5

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Solution for -4+1/2z=-5 equation: 


z in (-oo:+oo)

(1/2)*z-4 = -5 // + 5

(1/2)*z-4+5 = 0

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

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

z = -1/1/2

z = -2

z = -2

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