((7x-7)/3)/((3x-3)/7)

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


D( x )

(3*x-3)/7 = 0

(3*x-3)/7 = 0

(3*x-3)/7 = 0

3*x-3 = 0 // + 3

3*x = 3 // : 3

x = 3/3

x = 1

x in (-oo:1) U (1:+oo)

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

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

( 7*x-7 )

7*x-7 = 0 // + 7

7*x = 7 // : 7

x = 7/7

x = 1

( 7 )

7 = 0

x belongs to the empty set

x in { 1} 

x belongs to the empty set

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