((7-x)-(x-5))/((49-x^2)/(x))

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Solution for ((7-x)-(x-5))/((49-x^2)/(x)) equation: 


D( x )

(49-x^2)/x = 0

x = 0

(49-x^2)/x = 0

(49-x^2)/x = 0

-1*x^2 = -49 // : -1

x^2 = 49

x^2 = 49 // ^ 1/2

abs(x) = 7

x = 7 or x = -7

x = 0

x = 0

x in (-oo:-7) U (-7:0) U (0:7) U (7:+oo)

(5-x-x+7)/((49-x^2)/x) = 0

(x*(12-2*x))/(49-x^2) = 0

( 12-2*x )

12-2*x = 0 // - 12

-2*x = -12 // : -2

x = -12/(-2)

x = 6

( x )

x = 0

x in { 0} 

x = 6

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