(7x-7)/(5x+5)*(14x+14/10x-10)

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Solution for (7x-7)/(5x+5)*(14x+14/10x-10) equation: 


D( x )

5*x+5 = 0

5*x+5 = 0

5*x+5 = 0

5*x+5 = 0 // - 5

5*x = -5 // : 5

x = -5/5

x = -1

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

((7*x-7)/(5*x+5))*(14*x+(14/10)*x-10) = 0

((7*x-7)*(77/5*x-10))/(5*x+5) = 0

( 7*x-7 )

7*x-7 = 0 // + 7

7*x = 7 // : 7

x = 7/7

x = 1

( 77/5*x-10 )

77/5*x-10 = 0 // + 10

77/5*x = 10 // : 77/5

x = 10/77/5

x = 50/77

x in { 1, 50/77 }

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