(x+4)/9=3x

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Solution for (x+4)/9=3x equation: 


x in (-oo:+oo)

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

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

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

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

x-3*9*x+4 = 0

4-26*x = 0

(4-26*x)/9 = 0

(4-26*x)/9 = 0 // * 9

4-26*x = 0

4-26*x = 0 // - 4

-26*x = -4 // : -26

x = -4/(-26)

x = 2/13

x = 2/13

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