-5/7z=-15

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Solution for -5/7z=-15 equation: 


z in (-oo:+oo)

(-5/7)*z = -15 // + 15

(-5/7)*z+15 = 0

15-5/7*z = 0 // - 15

-5/7*z = -15 // : -5/7

z = -15/(-5/7)

z = 21

z = 21

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