X/-15=21

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Solution for X/-15=21 equation: 


X in (-oo:+oo)

X/(-15) = 21 // - 21

X/(-15)-21 = 0

-1/15*X-21 = 0 // + 21

-1/15*X = 21 // : -1/15

X = 21/(-1/15)

X = -315

X = -315

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