W/-3=21

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Solution for W/-3=21 equation: 


W in (-oo:+oo)

W/(-3) = 21 // - 21

W/(-3)-21 = 0

-1/3*W-21 = 0 // + 21

-1/3*W = 21 // : -1/3

W = 21/(-1/3)

W = -63

W = -63

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