Respuesta :

Answer:

x=20 and x=2 and 5. idk

Step-by-step explanation:

3. 2x=4x-40

  -4x  -4x

-2x=-40

-2x/-2=-40/-2

x=20

4. they are all eqaul so choose one line

4x=8

4x/4=8/4

x=2

plug all in so you can see the same anwsers

5. i dont know