N/3-9=-12 - solution

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Solution for N/3-9=-12 equation:

N in (-oo:+oo)

N/3-9 = -12 // + 12

N/3-9+12 = 0

1/3*N+3 = 0 // - 3

1/3*N = -3 // : 1/3

N = -3/1/3

N = -9

N = -9

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