20-z/4=z/2 - solution

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Solution for 20-z/4=z/2 equation:

z in (-oo:+oo)

20-(z/4) = z/2 // - z/2

20-(z/4)-(z/2) = 0

20-3/4*z = 0 // - 20

-3/4*z = -20 // : -3/4

z = -20/(-3/4)

z = 80/3

z = 80/3

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