b/-3=-7

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Solution for b/-3=-7 equation: 


b in (-oo:+oo)

b/(-3) = -7 // + 7

b/(-3)+7 = 0

7-1/3*b = 0 // - 7

-1/3*b = -7 // : -1/3

b = -7/(-1/3)

b = 21

b = 21

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