X-9=1/2x

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


x in (-oo:+oo)

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

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

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

X-1/2*x-9 = 0 // - X-9

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

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

x = -2*(9-X)

x = -2*(9-X)

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