X/-3=-21 - solution

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Solution for X/-3=-21 equation:

X in (-oo:+oo)

X/(-3) = -21 // + 21

X/(-3)+21 = 0

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

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

X = -21/(-1/3)

X = 63

X = 63

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