4z/10-1=-2 - solution

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Solution for 4z/10-1=-2 equation:

z in (-oo:+oo)

(4*z)/10-1 = -2 // + 2

(4*z)/10-1+2 = 0

2/5*z+1 = 0 // - 1

2/5*z = -1 // : 2/5

z = -1/2/5

z = -5/2

z = -5/2

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