b/-9=9

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Solution for b/-9=9 equation: 


b in (-oo:+oo)

b/(-9) = 9 // - 9

b/(-9)-9 = 0

-1/9*b-9 = 0 // + 9

-1/9*b = 9 // : -1/9

b = 9/(-1/9)

b = -81

b = -81

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