4z/10=-7

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Solution for 4z/10=-7 equation: 


z in (-oo:+oo)

(4*z)/10 = -7 // + 7

(4*z)/10+7 = 0

2/5*z+7 = 0 // - 7

2/5*z = -7 // : 2/5

z = -7/2/5

z = -35/2

z = -35/2

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