1/2z+6=15 - solution

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Solution for 1/2z+6=15 equation:

z in (-oo:+oo)

(1/2)*z+6 = 15 // - 15

(1/2)*z-15+6 = 0

1/2*z-9 = 0 // + 9

1/2*z = 9 // : 1/2

z = 9/1/2

z = 18

z = 18

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