Respuesta :

Answer:

x = 1

Step-by-step explanation:

  9 - 9x  =   -9 • (x - 1)

   Solve :    -9   =  0

     Solve  :    x-1 = 0

Add  1  to both sides of the equation : x=1

     

Answer:

x= -1

Step-by-step explanation:

5x = 4x - 1

-4x  -4x

1x = - 1

---    ---

1      1

x = -1

Check work:

5(-1) = 4(-1) - 1

-5 = -4-1

-5=-5

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