Question

resolver la ecuacion x(x-3)= 9-3x

Answer 1

2x-3x = 9 -3x 
5x-3x=9
2x=9 / 2 
x=4.5

Answer 2

x(x-3)= 9-3x
2x-3x= 9-3x
2x-3x+3x= 9
2x=9
x=4.5

Espero haberte ayudado