n/2-3=-1

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Solution for n/2-3=-1 equation: 


n in (-oo:+oo)

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

n/2-3+1 = 0

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

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

n = 2/1/2

n = 4

n = 4

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