1/2(x-9)=-1

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


x in (-oo:+oo)

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

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

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

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

1/2*x-7/2 = 0

1/2*x-7/2 = 0

1/2*x-7/2 = 0 // + 7/2

1/2*x = 7/2 // : 1/2

x = 7/2/1/2

x = 7

x = 7

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