9x^2/16-1=0 - solution

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Solution for 9x^2/16-1=0 equation:

x in (-oo:+oo)

(9*x^2)/16-1 = 0

9/16*x^2 = 1 // : 9/16

x^2 = 16/9

x^2 = 16/9 // ^ 1/2

abs(x) = 4/3

x = 4/3 or x = -4/3

x in { 4/3, -4/3 }

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