4z/7-9=-6 - solution

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Solution for 4z/7-9=-6 equation:

z in (-oo:+oo)

(4*z)/7-9 = -6 // + 6

(4*z)/7-9+6 = 0

4/7*z-3 = 0 // + 3

4/7*z = 3 // : 4/7

z = 3/4/7

z = 21/4

z = 21/4

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