z/2-3=4 - solution

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Solution for z/2-3=4 equation:

z in (-oo:+oo)

z/2-3 = 4 // - 4

z/2-4-3 = 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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