(15x+45)(x+3)/15(x+3)(x-3)

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Solution for (15x+45)(x+3)/15(x+3)(x-3) equation: 


x in (-oo:+oo)

(((15*x+45)*(x+3))/15)*(x+3)*(x-3) = 0

((15*x+45)*(x+3)^2*(x-3))/15 = 0

( 15*x+45 )

15*x+45 = 0 // - 45

15*x = -45 // : 15

x = -45/15

x = -3

( x+3 )

x+3 = 0 // - 3

x = -3

( x-3 )

x-3 = 0 // + 3

x = 3

x in { -3, -3, -3, 3 }

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