7x/(3-x) - solution

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Solution for 7x/(3-x) equation:

D( x )

3-x = 0

3-x = 0

3-x = 0

3-x = 0 // - 3

-x = -3 // * -1

x = 3

x in (-oo:3) U (3:+oo)

(7*x)/(3-x) = 0

7*x = 0 // : 7

x = 0

x = 0

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