X/-3-12=9

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Solution for X/-3-12=9 equation: 


X in (-oo:+oo)

X/(-3)-12 = 9 // - 9

X/(-3)-12-9 = 0

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

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

X = 21/(-1/3)

X = -63

X = -63

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