3x/9=4-x - solution

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

x in (-oo:+oo)

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

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

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

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

x = 4/4/3

x = 3

x = 3

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