x/-21

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Solution for x/-21 equation: 


x in (-oo:+oo)

x/(-2) > 1 // - 1

x/(-2)-1 > 0

-1/2*x-1 > 0 // + 1

-1/2*x > 1 // : -1/2

x < 1/(-1/2)

x < -2

x in (-oo:-2)

(-oo:-2)

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