1/2z+z=9

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Solution for 1/2z+z=9 equation: 


z in (-oo:+oo)

(1/2)*z+z = 9 // - 9

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

3/2*z-9 = 0 // + 9

3/2*z = 9 // : 3/2

z = 9/3/2

z = 6

z = 6

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