7+1/2z=13 - solution

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Solution for 7+1/2z=13 equation:

z in (-oo:+oo)

(1/2)*z+7 = 13 // - 13

(1/2)*z-13+7 = 0

1/2*z-6 = 0 // + 6

1/2*z = 6 // : 1/2

z = 6/1/2

z = 12

z = 12

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