84-xx/2

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Solution for 84-xx/2 equation: 


x in (-oo:+oo)

84-x < x/2 // - x/2

84-x-(x/2) < 0

84-3/2*x < 0 // - 84

-3/2*x < -84 // : -3/2

x > -84/(-3/2)

x > 56

x in (56:+oo)

(56:+oo)

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