Question

8(3-3x)-12-9(5-x)=12

Answer 1

24-24x-12-45+9x = 12
-24x+9x = 12-24+12+45
-15x = 45
x = -(45:15) 
x = -3

Answer 2

Resolver.

8 ( 3 - 3x) - 12 - 9( 5 - x) = 12
24 - 24x - 12 - 45 + 9x = 12
24 - 12 - 45 - 24x + 9x = 12
24 - 57 - 15x = 12
- 33 - 15x = 12
- 33 - 12 = 15x
- 45 = 15x
- 45/15 = x
- 3 = x
x = - 3

Respuesta.
x = - 3