(1/3x)-9=-12 - solution

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Solution for (1/3x)-9=-12 equation:

x in (-oo:+oo)

(1/3)*x-9 = -12 // + 12

(1/3)*x-9+12 = 0

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

1/3*x = -3 // : 1/3

x = -3/1/3

x = -9

x = -9

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