-15=z/-2 - solution

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Solution for -15=z/-2 equation:

z in (-oo:+oo)

-15 = z/(-2) // - z/(-2)

-(z/(-2))-15 = 0

1/2*z-15 = 0 // + 15

1/2*z = 15 // : 1/2

z = 15/1/2

z = 30

z = 30

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