9+1/2n=12

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Solution for 9+1/2n=12 equation: 


n in (-oo:+oo)

(1/2)*n+9 = 12 // - 12

(1/2)*n-12+9 = 0

1/2*n-3 = 0 // + 3

1/2*n = 3 // : 1/2

n = 3/1/2

n = 6

n = 6

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