1/3x+x=9 - solution

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Solution for 1/3x+x=9 equation:

x in (-oo:+oo)

(1/3)*x+x = 9 // - 9

(1/3)*x+x-9 = 0

4/3*x-9 = 0 // + 9

4/3*x = 9 // : 4/3

x = 9/4/3

x = 27/4

x = 27/4

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