Question

2(3x+3)-4(5x-3)=x(x-3)-x(x+5)

Answer 1

2 ( 3x + 3) - 4(5x - 3) = x(x-3) - x ( x+5)

Aplicando prop. distributiva donde corresponda:

6x + 6 - 20x + 12 = x² - 3x - x²  - 5x

 18 - 14x = -8x

   18 = 14x - 8x

   18 = 6x

 18/6 = x

$\boxed{ x = 3}$

Saludos!

Answer 2

$2(3x+3)-4(5x-3)=x(x-3)-x(x+5) \\ \\ 6x+6 -20x+12= x^2-3x-x^2-5x \\ \\ 6+12= x^2-3x-x^2-5x-6x+20x \\ \\ 18= -3x-5x-6x+20x \\ \\ 18= -14x+20x \\ \\ 18= 6x \\ \\ \frac{18}{6}=x \to \boxed{x=3}$

Espero que te sirva, salu2!!!!