Respuesta :

Answer:

3

Step-by-step explanation:

-x = 3 -4x + 6

Add 3 and 6.

-x = -4x + 9    * add 4x to itself and -x

+4x = 4x + 9  * -4x + 4x would cancel out so..

3x = 9   * divide

x = 3