3/9=x/4x-7

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Solution for 3/9=x/4x-7 equation: 


x in (-oo:+oo)

3/9 = (x/4)*x-7 // - (x/4)*x-7

3/9-((x/4)*x)+7 = 0

(-1/4)*x^2+3/9+7 = 0

-1/4*x^2 = -22/3 // : -1/4

x^2 = 88/3

x^2 = 88/3 // ^ 1/2

abs(x) = (88/3)^(1/2)

x = (88/3)^(1/2) or x = -(88/3)^(1/2)

x in { (88/3)^(1/2), -(88/3)^(1/2) }

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