z/2-7=12 - solution

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Solution for z/2-7=12 equation:

z in (-oo:+oo)

z/2-7 = 12 // - 12

z/2-12-7 = 0

1/2*z-19 = 0 // + 19

1/2*z = 19 // : 1/2

z = 19/1/2

z = 38

z = 38

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