1/2x+9=11

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Solution for 1/2x+9=11 equation: 


x in (-oo:+oo)

(1/2)*x+9 = 11 // - 11

(1/2)*x-11+9 = 0

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

1/2*x = 2 // : 1/2

x = 2/1/2

x = 4

x = 4

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