1/2x-4=-5 - solution

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Solution for 1/2x-4=-5 equation:

x in (-oo:+oo)

(1/2)*x-4 = -5 // + 5

(1/2)*x-4+5 = 0

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

1/2*x = -1 // : 1/2

x = -1/1/2

x = -2

x = -2

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