9=1/2x-1

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Solution for 9=1/2x-1 equation: 


x in (-oo:+oo)

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

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

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

10-1/2*x = 0 // - 10

-1/2*x = -10 // : -1/2

x = -10/(-1/2)

x = 20

x = 20

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