(1/2x)-9=12

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Solution for (1/2x)-9=12 equation: 


x in (-oo:+oo)

(1/2)*x-9 = 12 // - 12

(1/2)*x-12-9 = 0

1/2*x-21 = 0 // + 21

1/2*x = 21 // : 1/2

x = 21/1/2

x = 42

x = 42

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