1/2x-9-21

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Solution for 1/2x-9-21 equation: 


x in (-oo:+oo)

(1/2)*x-9 > -21 // + 21

(1/2)*x-9+21 > 0

1/2*x+12 > 0 // - 12

1/2*x > -12 // : 1/2

x > -12/1/2

x > -24

x in (-24:+oo)

(-24:+oo)

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