Z/2-7=8,5 - solution

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Solution for Z/2-7=8,5 equation:

Z in (-oo:+oo)

Z/2-7 = 8.5 // - 8.5

Z/2-8.5-7 = 0

1/2*Z-15.5 = 0 // + 15.5

1/2*Z = 15.5 // : 1/2

Z = 15.5/1/2

Z = 31

Z = 31

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