z/2=-7

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Solution for z/2=-7 equation: 


z in (-oo:+oo)

z/2 = -7 // + 7

z/2+7 = 0

1/2*z+7 = 0 // - 7

1/2*z = -7 // : 1/2

z = -7/1/2

z = -14

z = -14

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